Answer:
B
Explanation:
Seems like the only "natural" option. (Something not caused by humans).
Answer:
Hi, im LuisUchihaYT, but ik lost my acc, can u help me out with something like in 1 hour ( im going to ask lots of questions-
Mechanical stress on weight-bearing bones plays a large part in bone remodeling. What single factor plays the largest role in maintaining adequate bone strength?.
Mechanical stress on weight-bearing bones plays a large part in bone remodeling. Gravity is the single factor that plays the largest role in maintaining adequate bone strength.
It is the function of gravity to provide mechanical stress or load to the bones. It is the result of this mechanical stress that bones get the specific density that is required for support.
It is due to this reason that astronauts tend to exercise regularly in space so that their bone density can be maintained.
If bone density is not maintained by gravity, then bones can lose their strength, and hence a body will difficulty in support and movement.
Bones have the ability to reshape and remodel themselves. Hence, constant stress shall be applied to them for their strengthening. Gravity acts as a single factor that is continuous in applying stress to the bones.
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The principle of states that, in an undisturbed sequence, the oldest
rocks are at the bottom of the sequence and successive layers are younger than those
below them
A;Lateral Continuity
B;Super position
c;Inclusions
d;Original Horizontality
Answer:
The principle of states that, in an undisturbed sequence, the oldest
rocks are at the bottom of the sequence and successive layers are younger than those
below them
A;Lateral Continuity
B;Super position
c;Inclusions
d;Original HorizontalityThe principle of states that, in an undisturbed sequence, the oldest rock are at the bottom of the sequence and successive layers are younger than those below them is Original Horizontality. Thus option D is correct.
What is rock ?A rock is formed due to the deposition of different mineral constituents in the earth’s crust and different types of rocks are formed based on different factors such as Geological classification, Physical classification, Chemical classification.
On the basis of Geological classification, three types of rocks are observed such as Sedimentary rock formed by the deposition of sediments formed by the process of weathering of pre-existing rocks and the sediments.
These sediments are transported by external agents like water, wind, frost, gravity, etc. Examples are Sandstone, limestone, lignite, etc.
Igneous rocks formed by the process of solidification of magma below the earth’s surface, unable to descend, these magma when cools down and solidifies into igneous rocks.
Thus option D is correct.
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1. Why does the immune system make memory cells?
2. Plants follow a reproduction pattern called alternate generations. Explain the two processes in alternate generations.
3. Describe the difference between sexual and asexual reproduction. Give at least one example organism for each type.
4. Many of your body’s responses operate off of either negative or positive feedback loops. When you are cold, you shiver. Explain why that happens.
But cells in our immune system can remember old foes just fine, and we've never really been sure exactly how they manage it. A new study has filled in missing details on the steps our body takes to remember pathogens, finally revealing the steps our immune cells take to preserve a reference library of past battles.
Symbiotic archaea that live inside tubeworms can use two different methods to metabolize ________ and can switch back and forth to accommodate fast-changing environmental conditions.
A) arsenic
B) cadmium
C) carbon dioxide
D) hydrogen sulfide
E) sulfuric acid
Symbiotic archaea that live inside tubeworms can use two different methods to metabolize hydrogen sulfide and can switch back and forth to accommodate fast-changing environmental conditions.
Symbiotic archaea that live inside tubeworms (specifically, deep-sea tubeworms) are known as sulfur-oxidizing bacteria. These bacteria have the ability to metabolize hydrogen sulfide, which is abundant in the deep-sea hydrothermal vent environments where the tubeworms reside. Hydrogen sulfide serves as an energy source for these bacteria, allowing them to generate the necessary nutrients for their survival.
The hydrothermal vent environments are highly dynamic, with fluctuating levels of hydrogen sulfide due to the venting of volcanic gases. To adapt to these fast-changing environmental conditions, the symbiotic archaea can switch between two different methods of metabolizing hydrogen sulfide. They can either use the sulfide oxidation pathway or the sulfur oxidation pathway, depending on the availability of hydrogen sulfide and other factors in their immediate environment.
This metabolic flexibility enables the symbiotic archaea to efficiently utilize the available resources and survive in the extreme and ever-changing conditions of deep-sea hydrothermal vents.
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Question 1 (1 point) Saved Carbohydrates are always a source of energy for exercise. Question 1 options: supported by the results does not match the results Question 2 (1 point) Saved The amount of energy produced from fats and lipids increases with the intensity of exercise. Question 2 options: supported by the results does not match the results Question 3 (1 point) The amount of energy produced from carbohydrates increases with the intensity of exercise. Question 3 options: supported by the results does not match the results Question 4 (1 point) When exercising, fats (and lipids) are used as a source of energy before carbohydrates. Question 4 options: supported by the results does not match the results Question 5 (1 point) Fats produce more energy for exercise because they have more carbons and hydrogens in each molecule. Question 5 options: supported by the results does not match the results Question 6 (1 point) The mass of fat and lipid used to produce energy at 65 % intensity of exercise is about the same as the mass of carbohydrate used. Question 6 options: supported by the results does not match the results Question 7 (1 point) The amount of energy produced increases with the intensity of exercise. Question 7 options: supported by the results does not match the results Question 8 (1 point) Most exercise in daily life is low intensity exercise. Question 8 options: supported by the results does not match the results
The amount of energy produced from carbohydrates increases with the intensity of exercise.
Why carbohydrates are used first as a source of energy?When the intensity of exercise increases, the amount of energy produced from carbohydrates also increases because carbohydrates are the quick source of energy which is used first by the body as compared to other macromolecules.
The amount of energy produced from fats and carbohydrates increases with the intensity of exercise because our body needs more energy for doing exercise.
The amount of energy produced from carbohydrates increases with the intensity of exercise because our body needs more energy for doing exercise.
No, When exercising, fats are not used as a source of energy before carbohydrates. Our body first use carbohydrates as a quick source of energy.
Yes, Fats produce more energy for exercise because they have more carbons and hydrogens in each molecule.
The mass of fat and lipid used to produce energy at 65 % intensity of exercise is not the same as the mass of carbohydrate used because fats produce have energy than carbohydrates.
The amount of energy produced increases with the intensity of exercise because our muscles needs more energy for doing exercise.
Most exercise in daily life is low intensity exercise because in those exercises less muscle involvement is present.
So we can conclude that the amount of energy produced from carbohydrates increases with the intensity of exercise.
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Why are there often so many steps between the original signal event and the cell's response?
This is because a variety of components must be integrated in order to accurately interpret and respond to the signal in a timely and effective manner.
The first step in this process is for the signal to be received and interpreted by the cell. This involves the binding of the signal molecule to a specific receptor, which triggers a cascade of cellular responses. This involves the activation of certain proteins, which then act as mediators of the signal within the cell and help to direct the response.
Once the signal has been received and interpreted, it must then be transmitted to the target organelle or region of the cell. This is done by a variety of molecules such as hormones, neurotransmitters, and growth factors. These molecules are released from the cell and travel to their target where they bind to specific receptors. This triggers a series of responses in the target organelle or region.
Finally, the cell must respond appropriately to the signal. This involves the activation of specific genes, which then produce proteins that alter the cells physiology and behavior. This is a process of gene expression that is tightly regulated and allows the cell to respond rapidly and accurately to the signal.
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What is the function of hormones?
Electrical stimulation of the brain (ESB) is used on humans during brain surgery to map out ___________. A. Nerves and neural pathways B. Impulses and nerve functions C. Blood flow and mental activity D. The brain and critical structures Please select the best answer from the choices provided A B C D.
Answer:
Electrical stimulation of the brain (ESB) is used on humans during brain surgery to map out the brain and critical structures.
^_________^ <3
In a woodland ecosystem, the number of species of microorganisms in the soil that do not
harm plants increases. How does this rise in biodiversity affect the sustainability of the
ecosystem?
A The rise in biodiversity makes the ecosystem less sustainable.
B The rise in biodiversity makes the ecosystem more sustainable.
C The rise in biodiversity does not change the sustainability of the ecosystem.
D The rise in biodiversity makes the ecosystem only temporarily less sustainable.
Answer:
I think it’s B
Explanation:
Veteran trees are home to a variety of invertebrate species because a woodland's diversity is essential (insects, spiders, millipedes, centipedes, etc.), Thus, option B is correct.
What is the rise in biodiversity in woodland ecosystem?In addition to lichens and fungi. Mature forests also favor bats among other species. Biodiversity in the woodland is a result of structural diversity.
Stability increases with biodiversity in ecosystems, species, and people. For instance, species with numerous populations that are adapted to a wide range of conditions and high genetic diversity are more likely to be able to withstand disturbances, disease, and climate change.
Generally speaking, expanding the variety of habitats or vegetation structures present at a site can be done to increase biodiversity.
Therefore, The rise in biodiversity makes the ecosystem more sustainable.
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Suppose the brown allele for eye color (B) is completely dominant over the blue
allele for eye color (b). If two brown-eyed parents produce a child that is blue-
eyed, what FRACTION is the probability that the next child will have blue eyes?
Answer:
50%
Explanation:
its a chance but not likely
because its not dominant
Removal and viewing of living tissue from the body is a bi_____.
erythrocyte
opsy
Staphylococci
Answer: opsy
Explanation: a biopsy is a procedure in which living tissues are removed from a sample (ex. a tumor) for testing or examination under a microscope.
A forest ecosystem experiences a cool, dry season. Which change would most affect the bird populations in the ecosystem?
A forest ecosystem that undergoes a cool, dry season may affect the bird populations present in the ecosystem. In general, bird populations rely heavily on various environmental factors to thrive. Hence, any change that occurs within the ecosystem that is detrimental to their natural habitat could have significant effects on their population sizes.
One of the changes that could significantly affect bird populations in the ecosystem is the availability of food. A cool, dry season could lead to a shortage of food supplies. Birds that are dependent on certain types of food or insects may struggle to find their preferred meals during this time, which can lead to starvation and death.
Furthermore, bird migration could also be influenced by the cooler, drier conditions. Several species of birds migrate to other areas to find better habitats during the cooler months, including many songbirds. If the cooler season comes too early or late, this could lead to birds not being able to leave or return on time, disrupting their usual migration patterns.
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What is the function of the hormone progesterone?
ОООО
preparation of the body for maintaining pregnancy
development of male secondary sex characteristics
development of female secondary sex characteristics
preparation of the fallopian tube for fertilization
Answer:
A. preparation of the body for maintaining pregnancy
Explanation:
Progesterone hormone function in preparing the body in order to maintainpregnancy.
What is Progesterone?Progesterone is a type of hormone that belong to group of steroid hormones called ‘progestogens’. This hormone play important in maintaining pregnancy. progestins is a Synthetic hormones that have a similar action to that of progesterone. Progesterone is secreted by the corpus luteum in the ovary during the second half of the menstrual cycle. It functions during menstrual cycle.
Therefore, Progesterone hormone function in preparing the body in order to maintain pregnancy.
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Which organ-system carries lipids from the gastrointestinal tract to blood?
a. Respiratory system
b. Circulatory system
c. Digestive system
d. Endocrine system
The circulatory system, also known as the cardiovascular system, is responsible for carrying lipids from the gastrointestinal tract to the blood. The final answer is (b).
After the ingestion of lipids through food, they undergo digestion in the digestive system, primarily in the small intestine. During digestion, lipids are broken down into smaller molecules called fatty acids and glycerol.Once the lipids are digested and absorbed by the cells lining the small intestine, they are transported into the lymphatic system in structures called lacteals.The lymphatic system eventually merges with the bloodstream, and the lipids are then carried through the circulatory system, specifically the blood vessels, to various tissues and organs throughout the body.
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examine the table, if a mutation occurred in the indicated region, which areas would you expect the Pitx1 gene.” check all that apply
Mutation result in changes in the nucleotides sequence in genes, so a mutation of the Pitx1 gene will change the nucleotide sequence in the gene.
What is a mutation?A mutation refers to a change that occurs in the sequence of nucleotides in DNA molecules.
Since gene are regions of a DNA molecule that codes for a protein or gene product, a mutation will affect the gene product.
Therefore, for the Pitx1 gene, a mutation will change the nucleotide sequence in the gene.
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Litter is a kind of pollution that may not make a huge difference in the long run. The kind of pollution that we have to worry about is the kind that we can’t
Litter may seem like a minor form of pollution, but it can still have negative impacts on the environment and ecosystem. However, there are other forms of pollution that are more concerning and have larger, long-term effects.
Litter can harm wildlife, contaminate water sources, and create an unsightly environment. It can take a long time for litter to decompose, leading to a buildup of waste over time. However, compared to other forms of pollution such as air pollution, water pollution, and climate change, litter may not have as significant of an impact in the long run. These forms of pollution can have severe consequences on the health of individuals and the planet as a whole.
While litter should still be addressed and reduced, it is important to recognize the larger and more pressing forms of pollution that require attention and action. Taking steps to reduce air and water pollution, as well as addressing climate change, are critical for the health and well-being of our planet.
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During the process of photosynthesis, solar energy is converted into chemical energy which is then used to build which kind of molecule?.
Answer: Carbohydrate molecules.
Explanation:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration.
How can the wrong amino acid be added during translation?
Answer: This can happen due to many reasons such as tRNA mismatch, mutations, environmental factors, etc.
Explanation: Translation is a process of protein synthesis from a messenger RNA (mRNA) template, there is a possibility of an incorrect amino acid being added to the growing polypeptide chain. This can happen due to various reasons, some of which are :
1. tRNA Mismatch: During translation, a tRNA molecule brings an amino acid to the ribosome, where it is added to the growing polypeptide chain. If the tRNA molecule is mismatched, meaning it carries the wrong amino acid, it can still bind to the codon on the mRNA, leading to the addition of the wrong amino acid.
2. Mutations: Mutations can alter the codon sequence in the mRNA, leading to the addition of the wrong amino acid during the process of translation.
3. Environmental factors: Chemical modifications, nutrient availability, temperature, etc are many environmental factors that can lead to the addition of the wrong amino acid during the translation.
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Ecological footprint is the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources. The three countries with the largest ecological footprints are the United States, China, and India. Use the diagram above to answer the following question. Population growth in which country would have the greatest impact on global resources usage? United States Mongolia Argentina India
The country with the highest population growth, India, would have the greatest impact on global resource usage.
Ecological footprint is the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources. The United States, China, and India have the largest ecological footprints globally. A nation's population size is a critical factor in determining its ecological footprint. The ecological footprint is the amount of land required to sustain an individual, community, or population.
Population growth causes an increase in ecological footprint since more land is needed to support people's lives. India has the highest population growth rate, which is why its ecological footprint is enormous. India's ecological footprint has a significant impact on global resources usage since it is the second most populous country in the world after China. In conclusion, the country with the highest population growth, India, would have the greatest impact on global resource usage.
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Which structure controls the movement of tube feet?
The function of mitochondria and chloroplasts is related to energy. In what way does their function differ?
A.
Mitochondria produce energy in prokaryotic cells, while chloroplasts produce energy in eukaryotic cells.
B.
Mitochondria produce energy from food, while chloroplasts produce food from the Sun’s energy.
C.
In plants, mitochondria provide energy in non-green cells, while chloroplasts provide energy to cells in parts of the plant that are green.
D.
Mitochondria provide energy in the night, while chloroplasts provide energy in the day.
E.
Mitochondria provide energy from food synthesized by organelles other than chloroplasts, while chloroplasts provide energy through photosynthesis using the Sun’s energy.
Answer:
The answer is option E- Mitochondria provide energy from food synthesized by organelles other than chloroplasts, while chloroplasts provide energy through photosynthesis using the Sun’s energy.Explanation:
Taxonomy is the science of
ahh ༎ຶ‿༎ຶ please help I'm stuck
The ancient Egyptians consulted the heavens to tell them to do what?
The ancient Egyptian consulted heaven to tell them that when they died, their spiritual bodies would live on for an eternity that was quite similar to their physical world.
Who were Egyptians?Egyptians are an ethnic group from Egypt's Nile Valley. Mesopotamia is regarded as one of Southwest Asia's most popular and significant historical regions. Mesopotamia is situated between the Tigris and Euphrates rivers, north of Baghdad, which is now known as Iraq and Kuwait, and south of Babylon.
Therefore, the ancient Egyptians consulted heaven and were told that when they died, their spiritual bodies would continue on for an eternity in a world that was quite similar to their physical one.
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in the electron transport chain, if some of the protons are utilized for other functions in the cell and do not flow through the ATP synthase, then Multiple Choice 1. more glucose molecules are needed. 2. fewer glucose molecules are needed. 3. fewer ATP will be made 4. more carbon dioxide molecules are generated 5. more ATP will be made
If some protons in the electron transport chain are utilized for other functions in the cell, then fewer ATP will be made.(option 3)
The electron transport chain is a series of complex proteins and enzymes located in the inner mitochondrial membrane. It is responsible for generating ATP through oxidative phosphorylation. During this process, protons are pumped from the matrix to the intermembrane space, creating a proton gradient that drives ATP synthesis.
If some of these protons are used for other cellular functions instead of flowing through the ATP synthase, then the proton gradient will be reduced, resulting in fewer ATP molecules being produced. This can happen, for example, if the cell needs to use the protons for pH regulation or to drive other membrane transport processes.
Therefore, fewer glucose molecules will be needed to produce the same amount of ATP if fewer protons are used for ATP synthesis.
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Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
changes in gene regulation that are caused by modifications to histones and the dna, but not the nucleotide sequence itself, are known as ________.
Changes in gene regulation that are caused by modifications to histones and the DNA but not the nucleotide sequence itself are known as epigenetic changes.
What are histones?Histones are proteins that DNA coils around, allowing it to be packaged into a compact structure known as chromatin. They are involved in regulating gene expression and chromosomal stability.Histone modifications include acetylation, methylation, and phosphorylation, among others, and they play a vital role in determining chromatin structure and regulating gene expression.
Epigenetic changes can be influenced by environmental factors, such as diet and stress, and can be passed down from one generation to the next. Epigenetic modifications can result in changes in gene expression and may contribute to the development of certain diseases, including cancer.
Scientists are currently researching ways to use epigenetic modifications to develop new therapies for cancer and other diseases. In summary, epigenetic changes are changes in gene regulation that are caused by modifications to histones and the DNA but not the nucleotide sequence itself.
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Wheat varieties are usually purelines because Group of answer choices there is little available genetic variation in wheat germplasm breeders do not want farmers to save their own seed the potential for exploiting hybrid vigor in wheat is limited wheat is predominantly outcrossing
Answer:
little available genetic variation
Potential for exploiting hybrid vigor in wheat is limited wheat is predominantly outcrossing
Explanation:
Pure lines are varieties with little genetic variation. Pure lines are generated from crops that have undergone selection to the point of uniformity this is done to reduce variation that may occur genetically and to get varieties that are the same genetically.
Pure lines are they are the same genetically with no segregating genes. variation or changes in pure lines is mostly associated with the environment. wheat is an outcrossing crop generating a pure line will help have good vigour as selection would have been done to generate varieties that are strong and high yielding.
What does the term functional assessment refer to?
The term "functional assessment" refers to the evaluation of an individual's abilities and limitations in performing everyday activities and tasks.
It focuses on assessing an individual's functional status, which includes their physical, cognitive, and psychosocial abilities. The purpose of a functional assessment is to determine the person's level of independence, identify areas of impairment or disability, and develop appropriate interventions or support strategies to enhance their overall functioning and quality of life.
Functional assessments can be conducted in various settings, such as healthcare facilities, rehabilitation centers, or home care settings. They may involve standardized assessments, observation of daily activities, interviews with the individual and their caregivers, and input from multidisciplinary professionals, including healthcare providers, therapists, and social workers. The assessment may cover activities such as mobility, self-care, communication, cognitive abilities, social interaction, and participation in meaningful activities.
Overall, functional assessment provides valuable information for healthcare professionals to understand an individual's functional abilities, tailor interventions to their specific needs, and promote their independence and well-being.
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Organize the steps of DNA replication....
Two new copies of DNA are created, each containing one strand from the original DNA molecule.
DNA Polymerase joins complementary nucleotides to the template strands:
DNA Helicase "unzips" DNA breaking bonds between the 2 template strands,
The newly created strands are "proof-read" for errors.
DNA Polymerase attaches to cach exposed template strand.
put it in order
DNA Helicase "unzips" DNA breaking bonds between the 2 template strands,
The newly created strands are "proof-read" for errors.
DNA Polymerase attaches to cach exposed template strand.
DNA Polymerase joins complementary nucleotides to the template strands:
Two new copies of DNA are created, each containing one strand from the original DNA molecule.
DNA replication is the process by which a cell produces two identical copies of its DNA. The correct order of steps in DNA replication is C, E, B, D, and A
The steps of DNA replication are as follows:
DNA Helicase "unzips" DNA, breaking bonds between the two template strands: DNA replication begins at specific sites called origins of replication. The enzyme DNA helicase unwinds and separates the two strands of the DNA molecule by breaking the hydrogen bonds between the base pairs, creating a replication fork. DNA Polymerase attaches to each exposed template strand: Once the DNA strands are separated, DNA polymerase, along with other accessory proteins, binds to each exposed template strand. DNA polymerase is the primary enzyme responsible for synthesizing the new DNA strands.DNA Polymerase joins complementary nucleotides to the template strands, creating new strands: DNA polymerase adds nucleotides to the growing new strands in a complementary manner. It reads the exposed template strands and matches the appropriate nucleotides (A, T, C, or G) to form base pairs. Adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). The newly created strands are "proofread" for errors: During DNA replication, DNA polymerase has a proofreading function. It checks each nucleotide added to ensure that it correctly pairs with the template strand. Two new copies of DNA are created, each containing one strand from the original DNA molecule: As DNA polymerase continues to add nucleotides, it synthesizes two new DNA strands, one along each template strand. These newly synthesized strands are complementary to the original strands.Thus the correct order is C, E, B, D, and A.
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Complete question:
Organize the steps of DNA replication.
A. Two new copies of DNA are created, each containing one strand from the original DNA molecule.
B. DNA Polymerase joins complementary nucleotides to the template strands:
C. DNA Helicase "unzips" DNA-breaking bonds between the 2 template strands,
D. The newly created strands are "proofread" for errors.
E. DNA Polymerase attaches to cach exposed template strand.