Drag each tile to the correct location. Not all labels will be used. Identify the phases in the life cycle of small and big stars. supernova: In this stage, the star collapses and produces elements heavier than iron. planetary nebula: In this stage, the star emits strong energy pulses that push away the outer layers creating a cloud of ionized gas around the core. neutron star: In this stage, the star has reduced to an extremely dense core. white dwarf: In this stage, the star has reduced to a dense core.

Answer:

biology is the study of plants and animals

Explanation:

Biology is defined as the study of living things and their vital processes of life. The word biology was coined from two Greek words: bio means life and logos means study

Answer:

Color balance changes the overall mixture of colors in an image and is used for color correction. Generalized versions of color balance are used to correct colors other than neutrals or to deliberately change them for effect.

Explanation:

Answer:

Salt is dissolved in warm water

Explanation:

The other answers are physical changes.

The conditions regulate and control the cell.

A cell is the basic structural and functional unit of life. Cells are the smallest unit of life that can carry out all the functions necessary for life. They are the building blocks of all living organisms, such as plants, animals, fungi, and bacteria. Cells are composed of a membrane that surrounds the cell and its contents, as well as a nucleus, which contains the genetic material necessary for the cell to function and reproduce. Cells receive and use energy to carry out their functions, such as metabolism, growth, and division. Cells come in a variety of shapes and sizes, and some cells specialize in particular functions. While cells are incredibly small, they are incredibly complex and are responsible for the life of an entire organism.

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Answer:

oceans water

Explanation:

Answer:

the sum of the environmental factors (such as drought, mineral deficiencies, and competition) that tend to restrict the biotic potential of an organism or kind of organism and impose a limit on numerical increase.

Answer:

true

Explanation:

the cell becomes two

Yes, this statement is TRUE cells will generally divide when they're too large

The larger a cell becomes, the more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane.

The mitotic phase follows interphase. Mitosis is nuclear division during which duplicated chromosomes are segregated and distributed into daughter nuclei. Usually the cell will divide after mitosis in a process called cytokinesis in which the cytoplasm is divided and two daughter cells are formed.

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Answer:

The correct answer is -

anemia- erythrocytes

easy bleeding- platelets

Repeated infections - leucocytes

enlarged lymph nodes- leucocytes

shortness of breath- erythrocytes

excessive bruising- Platelets

Explanation:

Cancer of the lymphocytes is chronic lymphocytic leukemia (CLL). Lymphocytes are a type of white blood cell involved in the body's immune system.

Platelets are tiny blood cell fragments that help your body form clots to stop bleeding. The platelets then rush to the site of damage and form a plug, or clot, to repair the damage.

Erythrocytes are red blood cells that travel in the blood. They carry oxygen from the lungs to the body and bring carbon dioxide back to the lungs to be expelled.

Leucocytes- White blood cells (also called leukocytes or leucocytes and abbreviated as WBCs) are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.

Answer:The evolutionary history of hominins has been characterized by significant dietary changes, which include the introduction of meat eating, cooking, and the changes associated with plant and animal domestication. Decades of anthropological research have been devoted to elucidating this dietary history, in part because these shifts were likely associated with major anatomical and cultural changes (e.g., the increase in relative brain size and the advent of modern civilization via agriculture). However, this reconstruction is also crucial for understanding the evolutionary context of our modern diets and the diseases often associated with them.

In parallel with the historical reconstruction of hominin diets, molecular evolutionary analyses have been used to interrogate the genome for signals of genetic adaptations to different dietary regimes. A major advantage of many evolutionary genetic approaches is that they do not necessarily require strong assumptions about the specific genes and alleles that were targets of diet-related selective pressures. For this reason, evolutionary genetic analyses have the potential not only to inform existing adaptive hypotheses of hominin dietary history, but also to help generate new ones.

Here, we bring together these two areas of inquiry, namely anthropology and evolutionary genetics, to highlight their recent findings related to human dietary history and to discuss the limitations of different approaches. We start by providing a brief overview of the major dietary shifts in hominin evolution and discussing the evolutionary genetics methods and approaches used to identify signals of natural selection. We then review the results of genetic studies aimed at detecting the loci that played a major role in dietary adaptations and conclude by outlining the potential of future studies in this area.

Explanation:

Answer:

i think its B.

B.B.B..B.B.B.B.B.B.B.B.

Answer:

D, All of the above

Explanation:

Answer:

Explanation:

A kidney machine, also known as a hemodialysis machine, filters your blood through a dialyzer, which works like a kidney and filters out extra salt, waste, and fluid. The machine has built-in safety checks to ensure the process is safe and effective. A pump in the machine slowly draws out your blood, then sends it through the dialyzer. Your cleaned blood is sent back into your body through the second needle in your arm.

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Answer:

This question is incomplete. Group of answer choices are:

A. G1

B. G2

C. Prophase

D. Metaphase

E. Anaphase

The correct answer is A.

Explanation:

The G1 phase (Gap 1 phase) is the period of the cell cycle from the time a cell is born until the S phase begins. When the G1 phase begins (just after the division of the stem cell) the size of the newly originated cell is half of its normal size, and the cell must grow to reach it. For this, in this period, RNA and proteins are actively synthesized. During this period, the cell has only the amount of DNA that it has received from its progenitor and each chromosome is made up of a single chromatid, since DNA replication has not yet occurred.

Answer:

5%

Explanation:

Frequency of white tigers = 4%

population of tigers = 200

number of heterozygotes = 10

Determine the actual genotype frequency of Heterozygotes

frequency of heterozygotes = Number of heterozygotes / population

= ( 10 / 200 ) * 100

= 0.05 * 100 = 5%

Answer:

{fil 3983920<idmiw} basic trigonometry

Explanation:

Answer:

Explanation:

Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment. An example would be moths of the same species with different color wings.

Answer:

B

Explanation:

It has 47 electrons, as proton number is equal/the same as the electron number (proton number=electron number).

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Answer:

C

Explanation:

I have dont this science quiz

Itching and other skin problems are signs that a cat or dog may have flea. Fleas are parasites known for their biting and blood-sucking abilities. When they bite, flea saliva enters the pet’s circulatory system, sometimes causing an allergic response commonly seen as a “hot spot” on the pet’s neck or the base of its tail.

Fleas are tiny parasitic insects that infest the fur of dogs and cats. They feed on blood and cause skin irritation that results in itching. If the problem is severe, it can lead to more significant health issues. Pet owners should watch for signs of fleas and treat their pets promptly to avoid complications. Fleas lay eggs on the skin of dogs and cats, which hatch and develop into larvae.

The larvae feed on the skin, shedding as they mature. Adult fleas emerge from the larvae, biting the host to feed on blood. The process repeats itself, with adult fleas continuing to lay eggs on the skin of the pet.The most common sign of fleas in dogs and cats is itching. Pets will often scratch themselves, bite their skin, or lick excessively to relieve the irritation.

Other signs of fleas include red or inflamed skin, hair loss, and the appearance of small, raised bumps on the skin. These bumps are often referred to as "flea dirt" and are the waste products of the fleas. In severe cases, anemia, an allergic reaction, or the transmission of other parasites or diseases can occur.

Flea infestations can be treated with a variety of products, including topical treatments, shampoos, and collars. It is essential to follow the instructions on the product label and treat the pet and the surrounding environment to eliminate the fleas. Prevention is key to avoiding flea infestations, so pet owners should maintain a regular grooming and flea prevention schedule.

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Answer:

Genes

Explanation:

Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.

Answer:

it might be tissue

its tissssssssue

A index fossil must be easily reconizable, abundant, and have a wide geographic distribution and short range through time. A index fossil can be a plant or animal. Between the options in the question the one that is a trait to a good index fossil is the letter D (short-lived as species), being one of the best index fossil the Trilobites, that lived in shallow seas about 245 million years ago for a short time period.

Answer:

D

Explanation:

many chemical changes can be smelled, or heard, etc. And can be seen on a molecular level. Chemical changes create new substances:

Na + Cl = NaCl

In this case, we can see that light moths have a higher survival rate on light trees meanwhile dark moths have it on dark trees, on the contrary, if dark moths are on light trees or light moths on dark trees, we see a drastic drop on population numbers, so we could say that option a and option c are correct, however, if we look carefully at the graphs numbers we can see that light moths go from 50% to 75% an increase if 25% meanwhile dark moths go from 50% to 85% an increase of 35% so we can say that overall populations and conditions dark moths on dark trees are the most successful although we must nos forget that many factors interfere in populational numbers no just bark color or predation, nonetheless, the correct answer is letter c.

Part A -The likelihood of having Autosomal Recessive Disorder is 1 in 10,000 people = 0.0001.

Part B - Inbreeding increases the probability of disorder.

Autosomal Recessive Disorder inheritance is the way genetic traits or conditions are passed from parent to child. Genetic conditions can occur when a child inherits a mutated (altered) copy of the gene from each parent. Parents of children with an autosomal recessive disorder usually do not have the disorder. Consanguineous offspring may be at increased risk for recessive diseases due to the expression of autosomal recessive gene mutations inherited from a common ancestor.

The following Genotypes can be found in the first two cousins:

A stands for dominant allele.

a denotes a recessive allele.

1) AA X AA

Normal for all offspring.

There are no problems.

2) AA X Aa

Genotype of offspring = AA and Aa.

Because the phenotype is normal, the condition does not exist.

3) Aa X Aa

Genotype of offspring = AA, Aa, and aa.

The condition affects one-quarter of all offspring.

1/4 are typical,

Half of them are carriers.

4) aa X aa

All offspring are afflicted by the condition.

If we assume the cousins to be carriers[because their genotype is not indicated, we will consider them to be carriers], affected kids are generated.

Carriers' probability = 0.02

By 1/2, both cousins are carriers.

And the likelihood that the child may be impacted - 1/4 or 25%

Total Probability is equal to 1/2 * 0.02 * 1/2 * 0.02

= 0.0001

As a result, the pair might have afflicted offspring by 0.0001.

Possessing the normal alleles has no effect on 25% of people; carrying one impacted and one unaffected allele has no effect on 50% of people. Carrying the afflicted Alleles affects 25% of the population.

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The activity potential On the off chance that a neuron gets an adequate number of excitatory signs, it responds by producing an activity potential toward the start of its axon.

Neurons (additionally called neurons or nerve cells) are the essential units of the cerebrum and sensory system, the phones answerable for getting tangible contributions from the outside world, for sending engine orders to our muscles, and for changing and transferring the electrical signs at each move toward between.

Neurons are the structural blocks of the sensory system. They get and communicate signs to various pieces of the body. This is completed in both physical and electrical structures.

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If they are able to reproduce they will produce fertile offspring.

Species is defined as a group of organisms that can interbreed and produce fertile offspring. This means that if two organisms can have offspring and if those offspring can reproduce and produce offspring they are of the same species. Measured by the number of species insects certainly make up the largest proportion of living organisms in the world. Over one million species of insects have been documented and studied by scientists.    

A population is a group of organisms of the same species living in the same area at the same time. A species is a type or type of organism. For example, all humans belong to one species the scientific name for our species is Homohis sapiens and are distinct from other species such as gorillas dogs and dandelions. The concept of morphospecies states that species are distinguished from other species by physical characteristics and can be identified by morphological characteristics.

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Answer:

A postsynaptic potential is defined as excitatory if it makes it easier for the neuron to fire an action potential. ... A postsynaptic potential is considered inhibitory when the resulting change in membrane voltage makes it more difficult for the cell to fire an action potential, lowering the firing rate of the neuron.

Bu definition, the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open.

The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials. These postsynaptic potentials can be of two types: postsynaptic excitatory potentials and postsynaptic inhibitory potentials.

In other words, depending on the type of ions that allow the receptor-channels or channels that were activated directly or indirectly by the neurotransmitter to pass, the postsynaptic potential generated may be depolarizing (excitatory postsynaptic potential) or hyperpolarizing (inhibitory postsynthetic potential).

The inhibitory postsynaptic potential changes the charge of the neuron to make it more negatively charged, that is, the membrane potential becomes more negative (hyperpolarizations).

In contrast, an excitatory postsynaptic potential is a change in the electrical charge of a nerve cell or neuron. The neuron begins with a negative charge, but the excitatory postsynaptic potential makes this charge more positive, that is, the membrane potential becomes less negative (depolarization).

So the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic potential is the ion channels that these open. The binding of neurotransmitters to their receptors can produce different effects on the postsynaptic neuron, including the opening of ion channels. This causes changes in the membrane potential and leads to the generation of postsynaptic potentials.

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