69. Plants transform energy from the sun
into
A nuclear energy
B chemical energy.
C visible light.
D steam.

The statement 'A mineral with a hardness of 3. 6 can scratch a mineral with a hardness of 5. 5, 6, and 9' is false because according to the Mohs scale of mineral hardness, a mineral with a hardness of 3.6 cannot scratch minerals with hardness values of 5.5, 6, or 9.

The Mohs scale is a relative scale that ranks minerals based on their ability to scratch or be scratched by other minerals. It ranges from 1 (softest) to 10 (hardest).

In the given scenario, the mineral with a hardness of 3.6 falls between the hardness values of 3 and 4 on the Mohs scale.

Therefore, it would be unable to scratch minerals with higher hardness values such as 5.5, 6, or 9. In the Mohs scale, a mineral can only scratch other minerals that have a lower hardness value.

For example, a mineral with a hardness of 5.5 can scratch minerals with hardness values lower than 5.5, but not those with higher hardness values.

Hence, based on the principles of the Mohs scale, the statement is false.

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Answer:

Materials

• Scrap piece of paper

• Pen or pencil

• Clock or timer that shows seconds or a helper with a watch

• Comfortable exercise clothes (optional)

• Calculator

Preparation

• Practice finding your pulse. Use the first two fingers of one hand to feel your radial pulse on the opposite wrist. You should find your radial pulse on the "thumb side" of your wrist, just below the base of your hand. Practice finding your pulse until you can do it quickly. (You can alternatively take your carotid pulse to do this activity, but be sure you know how to safely take it and press on your neck only very lightly with your fingers.)

• Measure your resting heart rate, which is your heart rate when you are awake but relaxed, such as when you have been lying still for several minutes. To do this, take your pulse when you have been resting and multiply the number of beats you count in 10 seconds by six. This will give you your resting heart rate in beats per minute (bpm). What is your resting heart rate? Write it on a scrap piece of paper.

• You will be measuring your heart rate during different types of physical exercises over a period of 15 minutes. Choose at least two different exercises. Some examples include jumping rope, lifting a two-pound weight, riding a bike, hula-hooping, walking, etc. Gather any needed materials. (If you want to make a homemade hula-hoop, steps for doing this are given in the activity Swiveling Science: Applying Physics to Hula-Hooping .) Do you think the activities will affect your heart rate differently? How do you think doing each activity will affect your heart rate?

Procedure

• Choose which exercise you want to do first. Before starting it, make sure you have been resting for a few minutes so that your heart is at its resting heart rate.  

• Perform the first exercise for 15 minutes. While you do this, write down the number of beats you count in 10 seconds after one, two, five, 10 and 15 minutes of activity. (You want to quickly check your pulse because it can start to slow within 15 seconds of stopping exercising.) How do the number of beats you count change over time? How did you feel by the end of the exercise?

• Calculate your heart rate after one, two, five, 10 and 15 minutes of exercise by multiplying the number of beats you counted (in 10 seconds) by six. How did your heart rate (in bpm) change over time?

• Repeat this process for at least one other exercise. Leave enough time between the exercises so that your heart rate returns to around its normal resting level (this should only take a few minutes). How did you feel by the end of the second exercise? How did your heart rate change over time for this exercise?  

• Take a look at the results you wrote down for this activity. Which exercise increased your heart rate the most? Which exercise increased your heart rate the fastest? Which exercise(s) elevated your heart rate to the target heart rate zone (50 to 85 percent of your maximum heart rate, where your maximum heart rate is 220 bpm minus your age)? Do you notice any consistent patterns in your results?

• Extra: Try this activity again but test different physical exercises. How does your heart rate change when you do other exercises? How are the changes similar and how are they different?

• Extra: Measure your heart rate while lying down, while sitting down, and while standing. How does your heart rate change with body position?  

• Extra: Repeat this activity with other healthy volunteers. How does their heart rate compare to yours? How does their change in heart rate while exercising compare to how yours changed?  

• Extra: Try this activity again but vary the intensity of your exercise. What intensity level elevates your heart rate to 50 percent of its maximum heart rate? What about nearly 85 percent of its maximum? Be sure not to exceed your recommended target heart rate zone while exercising

Explanation:

If you did a moderately intense exercise, such as walking, you may have seen an initial jump in your heart rate (where your heart rate falls within the lower end of your target heart rate zone within about one minute of exercise), but then your heart rate only slowly increased after that. After 15 minutes, you may have reached the middle of your target heart rate zone. To reach the upper end, people usually need to do a moderately intense exercise for a longer amount of time (such as for 30 minutes). If you did a more strenuous exercise—hula-hooping, for example—you may have seen a higher initial bump in your heart rate (such as reaching the middle of your target heart rate zone after just one minute of exercise), and then your heart rate stayed about the same for the remaining 14 minutes of exercise. Overall doing a more strenuous exercise generally raises a person's heart rate faster compared to doing an exercise that is only moderately i

Answer:

If simple subjectivism is true, when one person says X is right and another person says X is wrong, they are having a moral disagreement. False.

Answer:

Explanation:

WHAT ON EARTH IS THE QUESTION

Answer:

true

Explanation:

Most detected neutron stars are pulsars, and emit radio-frequency electromagnetic radiation.

can i get the crown

Answer: they would be dead

Explanation:

Answer:

Mongoose are opportunistic feeders that will eat birds, small mammals, reptiles, insects, fruits, and plants.

Explanation:

so, if they are removed, there would be a population crisis. there would be too many snakes to control because the mongoose are one of the animals groups that eat snakes. the snake population increases. less mongoose= more snakes

autotrophs

Explanation:

1) Deoxygenated blood flows from the body into the right atrium of the heart through the superior and inferior vena cava.

2) The right atrium contracts, forcing the blood through the tricuspid valve into the right ventricle.

3) The right ventricle contracts, pumping the blood through the pulmonary valve and into the pulmonary artery.

4) The pulmonary artery carries the deoxygenated blood to the lungs, where it receives oxygen and releases carbon dioxide.

5) Oxygenated blood flows from the lungs into the pulmonary veins.

6) The pulmonary veins carry the oxygenated blood to the left atrium of the heart.

7) The left atrium contracts, forcing the blood through the mitral valve into the left ventricle.

8) The left ventricle contracts, pumping the oxygenated blood through the aortic valve and into the aorta.

9) The aorta distributes the oxygenated blood to the rest of the body.

Answer:

Antarctica Bones

Explanation:

Antarctica Bones Give Evidence of Continental Drift By Philip J. Hilts March 21, 1982 Scientists have found bones of the first land mammal ever discovered in Antarctica, the dramatic and long-sought animal evidence to confirm the theory of continental drift.

A virus is a small infectious agent that consists of genetic material (DNA or RNA) surrounded by a protein coat called a capsid. Some viruses also have an outer envelope made of lipids.

Explanation:

As the ratio gets smaller, it takes longer for items to diffuse.

Explanation:

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared.

When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but less area for that substance to actually enter the cell.

this is actually why cells divide. When they become too large and it takes too long for them to transport materials across the cell, they lose efficiency and divide in half to raise the surface area to volume ratio.

Answer:  Without oceans, there would be more evaporation and more precipitation on Earth

Answer:

The correct answer would be - a condition that is not similar to the normal physiological function of a healthy body.

Explanation:

The disease is the condition where the deviation from the normal physiological function of an organism's body. It is associated with any abnormality in the structural or functional condition of the body.

For instance cancer, the body leaves its normal function of killing cells that are not following the norms and cause uncontrolled cell division

The species, Balaenoptera musculus, is used by scientists but is more commonly referred to as "blue whale" by the general public.

Plural taxon Biological categorization, or taxonomy, is the study of taxa, or any unit utilized in it. From kingdoms to subspecies, taxa are ordered in a hierarchy; typically, a given taxon includes numerous taxa of lower grade.

Trees do not fall into a taxonomic category; instead, they are a collection of different plant species that also have developed primarily a trunk or branches to tower over other plants and compete with them for sunlight. Angiosperms, or hardwoods, make up the bulk of tree species; gymnosperms, or softwoods, make up the majority of the remaining species.

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Answer:

Glucose (I think)

Explanation:

Answer:

what and the question is

DNA methylation patterns can be inherited from cell generation to the next because of the enzyme called DNA methyltransferase. This enzyme is recruited to hemi-methylated DNA and methylates the other strand.The answer is c.

An enzyme called DNA methyltransferase is recruited to hemi-methylated DNA and methylates the other strand. The maintenance of DNA methylation patterns in mammals is mainly achieved through the activity of the maintenance methyltransferase, DNMT1 (DNA methyltransferase 1), which preferentially copies methylation from the parental strand to the newly synthesized strand during DNA replication.The chemical modification of cytosine bases within a DNA molecule by the addition of a methyl group is referred to as DNA methylation.

In mammals, DNA methylation mainly happens at cytosine-phosphate-guanine dinucleotides (CpG) and usually suppresses transcription when it happens in the promoter region of a gene. However, DNA methylation patterns in somatic cells may alter during differentiation or disease progression, and alterations in DNA methylation patterns have been related to various illnesses, including cancer.

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Answer:

photosynthesis is the process where plants make food using co2, water, sunlight

Green plants, algae, and certain microorganisms transform solar light energy into chemical energy in the form of glucose through a process known as photosynthesis (a simple sugar). In the chloroplasts of plant cells, a crucial action takes place.

Plants make glucose and oxygen during photosynthesis by combining sunlight, water, and carbon dioxide. Photosynthesis's general chemical equation is:

Absorption of Light: A pigment called chlorophyll, which is present in chloroplasts, absorbs solar energy.

Conversion of Energy: A number of chemical processes are powered by the light energy that has been gathered.

Splitting of Water: The division of water molecules into hydrogen ions (H+) and oxygen (O₂). Photolysis is the name of this process.

Synthesis of Glucose: Carbon dioxide (CO₂) from the atmosphere enters the plant through small openings called stomata. Glucose is created when carbon dioxide (CO₂) and hydrogen ions (H+) from water mix (C6H12O6). In the presence of enzymes, this process takes place.

Release of Oxygen: Oxygen (O₂) is released into the atmosphere as a consequence of photosynthesis.

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The phase of the menstrual cycle that is characterized by discharge of fluid from the vagina and marks the first day of a new cycle is the menstrual phase. This phase is also characterized by the shedding of the uterine lining and the start of oogenesis.

The spiral arteries in the uterus constrict during this phase, reducing blood flow and leading to the discharge of menstrual fluid. During this phase, the lining of the uterus (endometrium) is shed, resulting in menstrual bleeding. This phase is followed by the proliferative phase, during which the endometrium begins to thicken again in preparation for potential pregnancy.

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Why do sharks avoid Dolphins?

Made of very strong and thick bone, dolphin snouts are biological battering rams. Dolphins will position themselves several yards under a shark and burst upwards jabbing their snout into the soft underbelly of the shark causing serious internal injuries. More than Peas in a Pod.

The probability that their first child will be aa bb is 1/4 or 25%.

In this scenario, we are considering two linked genes, (a) and (b), which are separated by 18 map units (m.u.). The man has the genotype aa bb, while the woman also has the genotype aa bb. The man's father was aa bb.

Since the man is aa bb, he can only pass on the a allele to his offspring. Similarly, the woman can only pass on the a allele to her offspring. As a result, all the children from this couple will have the genotype aa at the (a) locus.

For the (b) locus, since the man is bb and the woman is bb, they can only pass on the b allele to their children. Therefore, all the children from this couple will have the genotype bb at the (b) locus.

The probability of having the aa bb genotype for both loci is the product of the probabilities for each locus. The probability of aa at the (a) locus is 1, and the probability of bb at the (b) locus is also 1.

Therefore, the probability that their first child will be aa bb is 1/4 or 25%.

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hope it helps

#carry on learning

Answer

A. Blood group

Explanation

B

Muscle cells and nerve cells (neurons) are two very different types of cells. Muscle cells (muscle cells) contract to create movement, while nerve cells send messages from receptor cells to gland cells or muscle cells, which relay messages throughout the body.

Neurons are functional units of the nervous system that are always involuntary. Muscle cells are unique to muscles and have the ability to shorten themselves due to the presence of motor proteins in them.Nerve cells are the functional units of the nervous system. Muscle cells and nerve cells are two types of cells found in the body of animals. Muscle cells and nerve cells differ in structure and function. Muscle cells are the structural and functional units of muscle tissue, and nerve cells are found in the nervous system.  

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If a CAP protein mutant is unable to bind cAMP, it will not be able to bind to the DNA near the lac operon promoter, which will result in a decrease in transcription of the lac operon. This is because the binding of cAMP to CAP is necessary for the CAP protein to bind to DNA.

In the absence of cAMP-bound CAP, RNA polymerase will still be able to bind to the lac operon promoter, but at a reduced rate. This is because the binding of cAMP-bound CAP helps to stabilize the RNA polymerase-promoter complex and increase the rate of transcription initiation.

The lac operon is a gene regulatory system found in bacteria, which controls the expression of genes involved in lactose metabolism. The system is regulated by a protein called the catabolite activator protein (CAP), which binds to the DNA near the lac operon promoter and helps RNA polymerase bind to the promoter to initiate transcription.

Overall, the loss of CAP-cAMP binding will result in a decrease in the rate of transcription of the lac operon, which may affect the ability of the bacterium to efficiently metabolize lactose as a carbon source.

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Answer:

Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Plant cells have a cell wall, but animals cells do not. ...

Plant cells have chloroplasts, but animal cells do not. ...

Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles if any are present.

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not

Explanation:

hope this helps!

The statement all of the hamstrings insert on both the tibia and the fibula is not true of the hamstring group of muscles (Option B).

The hamstring group of muscles can be defined as voluntary skeletal muscles that can be found in the back thigh of the human body.

Therefore, with this data, we can see that the hamstring group of muscles can be found in the back thigh of the human body but not all of them are inserted on both the tibia and the fibula.

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Answer:

Plant biotechnology can be defined as the use of tissue culture and genetic engineering techniques to produce genetically modified plants that exhibit new or improved desirable characteristics.

Explanation:

These crops offer several benefits both farmers and consumers.

...

Pocket K No. 2: Plant Products of Biotechnology.

Product Trait

Bean Virus disease resistance

Canola Herbicide tolerance, modified oil/fatty acid, pollination control system, phytase production

Cotton Herbicide tolerance, insect resistance, low gossypol

Eggplant Insect resistance