if there is 10 fish
2fish swim away
2fish died
2 fish drowned.
how many fish are now?​

Answer:

b. silencing marks like H3K9 methylation; activating marks like H3K9 acetylation

Explanation:

Genomic imprinting is an epigenetic phenomenon that leads to parent-of-origin-specific monoallelic expression, thereby genes under imprinting are differentially expressed depending on their parental origin. Genomic imprinting involves DNA methylation, histone modification such as histone 3 lysine 9 methylation (H3K9) and non-coding RNA regulatory epigenetic pathways, which act together to silence one parental gene form or 'parental allele'. Maternal imprinting occurs when the maternal allele is silenced (usually caused by methylation of the maternal allele), whereas paternal imprinting occurs when the paternal allele is silenced (methylation of the paternal allele). Moreover, H3K9 acetylation is connected with active promoters (gene transcription). The imprinted genes are generally grouped in genomic regions called imprinting centers (ICs) that regulate gene expression according to the parental origin.

A. cattle grazing on public lands with no regulations is an example of the tragedy of the commons.

The tragedy of the commons refers to a situation in which individuals, acting in their own self-interest, use a shared resource (such as a grazing land) in an unsustainable way, leading to its depletion or degradation.

In the case of cattle grazing on public lands with no regulations, individual ranchers may graze more cattle than the land can sustainably support, leading to overgrazing and damage to the ecosystem. This is a classic example of the tragedy of the commons.

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Answer: one of the higher animals on the food chain die out, less water, heat waves

Explanation:

Answer:

Explanation:Overpopulation. Water pollution. Acid rain. Climate change. Air pollution. Illegal hunting

Answer:

It allows for the passage of certain substances into and out of the cell.

Explanation:

College life or getting to meet people provides an opportunity to get to know someone of the opposite sex outside your own family.

Understand differences and similarities of both genders, and learn how to get along with each other.

Establish good interpersonal relationships, enrich your social life.

How to Get to Know the Person

1 Ask open-ended questions

2 Ask them questions about the future

3 Learn about the interests

4 Be curious about the life

5 Actively listen to them

6 Open up about past.

7 Invite them to hang out with closest friends

8 Spend a typical day together

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Answer:

science is the use of technology and momentum is conserved in school

Explanation:

I tried to answer but I dont know what you mean im sorry

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.

Hope this helps :) !!!

Answer:

Yes, this is true. This is because animals also carry genes which codes for a certain trait, and these traits have their own allele. Mendel's experiment portrayed tall plants and dwarf plants being crossed, moreover the colour of the flowers could also be taken as an example. In the similar way, animals, for example, mice, could be white furred or brown furred. They both carry alleles which codes for their fur colour, like plant alleles which codes for either tall or dwarf.

Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyte. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles.

Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir. Color the reservoir grey and the flagellum black.

The Euglena is unique in that it is both heterotrophic (must consume food) and autotrophic (can make its own food). Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod like structures throughout the cell. Color the chloroplasts green. Euglena also have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food. Color the eyespot red.Euglena can also gain nutrients by absorbing them across their cell membrane, hence they become heterotrophic when light is not available, and they cannot photosynthesize.

The euglena has a stiff pellicle outside the cell membrane that helps it keep its shape, though the pellicle is somewhat flexible and some euglena can be observed scrunching up and moving in an inchworm type fashion. Color the pellicle blue.

In the center of the cell is the nucleus, which contains the cell's DNA and controls the cell's activities. The nucleolus can be seen within the nucleus. Color the nucleus purple, and the nucleolus pink.

The interior of the cell contains a jelly-like fluid substance called cytoplasm. Color the cytoplasm light yellow. Toward the posterior of the cell is a star-like structure: the contractile vacuole. This organelle helps the cell remove excess water, and without it the euglena could take in some much water due to osmosis that the cell would explode. Color the contractile vacuole orange.

Answer:

I think the answer is D. Study Ethical and Social issues.

Explanation:

I hope this helps!

The human genome project is done to determine what genes are most desirable to have, as well as to determine what genes are least desirable to have. The correct option is C.

The Human Genome Project was an international research project that aimed to determine the base pairs that make up human DNA.

It also identify, map, and sequence all of the human genome's genes from both a physical and functional standpoint.

The human genome project is being carried out to determine which genes are most preferable to have, as well as which genes are least desirable to have.

Thus, C is the correct answer.

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Answer:

The reproduction of organisms without the need for sexual intercourse.

Explanation:

Answer:

Option B

Explanation:

B. The cell will grow uncontrollably and continue to divide as long as it has food.

Cell growth is theeoretically stimulated by the binding of growth factors to their receptors using signaling pathways.

These pathways are regulated by proteins which are encoded for in the genes.

The gene that controls the regulation of these pathway when mutated produce malfunctioning signaling protein thus not allow for regulations of the cell cycle causing uncontrollable cell division. These mutated genes are called oncogenes.

Answer:

I think gender maybe it's so

Answer: A change of state occurs as the steel turns into rust (I think).

Answer:

monera kingdom

Explanation:

Answer:

The kingdom is Monera Kingdom

Explanation:

DNA is made up of pairs of nitrogenous bases. The nitrogenous bases is paired correctly is Adenine-thymine. Thus, option B is correct.

The DNA is formed by the nitrogen bases adenine, cytosine, guanine and thymine. The pairings between bases are -Adenine with Thymine and Cytosine with guanine. Nitrogenous bases are heterocyclic, planar, and relatively water-insoluble aromatic molecules.DNA consist of two types of nitrogenous bases-Purines and Pyrimidines.

Purines are the two common purine bases found in DNA are Guanine and Adenine. Pyrimidine-The two common pyrimidine bases found in DNA are Thymine and Cytosine.

According to the base-pairing rule in DNA- Adenine (purine) pairs with Thymine (Pyrimidine) and Guanine (purine) pairs with Cytosine. Adenine pairs with Thymine with two hydrogen bonds and Guanine pairs with Cytosine with three hydrogen bonds.

Thus, option B is correct.

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The nitrogen cycle is important to humans in the following way: it converts nitrogen into a form that humans can obtain by eating other organisms (option B).

Nitrogen cycle is the natural circulation of nitrogen in a series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.

During the nitrogen cycle, atmospheric nitrogen is converted to nitrogen oxides by lightning and deposited in the soil by rain, where it is assimilated by plants and either eaten by animals (and returned as faeces) or decomposed back to elemental nitrogen by bacteria.

The usable form of nitrogen that is assimilated by plants becomes accessible to humans when they consume the plants, hence, depicting the importance of the nitrogen cycle.

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The phenotype of the fish when both R and Bl are present will be Blue and Red while the genotype will be BR.

Co-dominance in genetics is the condition in which alleles of a gene are both dominant in that when both are present in an organism, the organism will show the phenotype of both alleles.

Since the alleles B for blue coloring, and R for red coloring are both dominant, when both are present in the fish, the phenotypic coloring in the fish will be blue and red.

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Answer:

3 NH3

Explanation:

Looking at one atom, we can see that there are 3 Hydrogen attached to 1 Nitrogen. The formula for that would NH3. There are 3 of these atoms so we add a coefficient of 3 in front of the formula.

In the high school population of 3,000 students, 2,117 students were homozygous Rh positive (AA), 806 students were heterozygous (Aa), and 77 students were homozygous Rh negative (aa).

Given:

Population size: 3,000 students

Rh negative population frequency: 16% (0.16)

From the Hardy-Weinberg equation.

p: frequency of the dominant Rh positive allele

q: frequency of the recessive Rh negative allele

We know that p + q = 1

p = 1 - q = 1 - 0.16 = 0.84.

The expected frequencies of the three genotypes are:

Homozygous Rh positive (AA): p² = (0.84)² = 0.7056

Heterozygous (Aa): 2pq = 2 ₓ 0.84 ₓ 0.16 = 0.2688

Homozygous Rh negative (aa): q² = (0.16)² = 0.0256

Homozygous Rh-positive: 0.7056 ₓ 3,000 = 2,116.8 (approximately 2,117 students)

Heterozygous: 0.2688 ₓ 3,000 = 806.4

Homozygous Rh negative: 0.0256 ₓ 3,000 = 76.8

Sickle-Cell Anemia in a Newborn Population:

Given:

Population size: 10,000 newborn babies

Sickle-cell anemia frequency: 4% (0.04)

p: frequency of the dominant normal allele

q: frequency of the recessive sickle-cell allele

p + q = 1

p = 1 - q = 1 - 0.04 = 0.96.

The expected frequencies of the three genotypes are:

Homozygous normal (AA): p²= (0.96)² = 0.9216

Heterozygous (Aa): 2pq = 2 ₓ 0.96 ₓ 0.04 = 0.0768

Homozygous sickle-cell (aa): q² = (0.04)² = 0.0016

Homozygous normal: 0.9216 ₓ 10,000 = 9,216

Heterozygous: 0.0768 ₓ 10,000 = 768

Homozygous sickle-cell: 0.0016 × 10,000 = 16

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The potential loss of unique species due to a disaster is referred to as mass extinction. When large numbers of species disappear over a short time period then it is called mass extinction.

Biodiversity threats include burning fossil fuels and deforesting forests and other wildernesses for industrial agriculture. Other human activities, such as wildlife poaching and hunting, can also have serious impacts.

When ecosystem services no longer adequately meet social needs, biodiversity loss can have far-reaching, direct human health consequences. In addition, ecosystem services impact indirectly on livelihoods, incomes, local migration, and, in some cases, political conflict.

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Answer:

1. the boundary that the ocean crust forms is the Divergent Boundary.

2. both these plates move apart and cause earthquakes.

Explanation:

1. these boundaries are known to crash against each other causing earthquakes, but these boundaries are also form the oceanic crust.

2. when they move apart they cause earthquakes and volcano's. an example of this is the Mid- Atlantic ridge.

Answer:

Mouth: The process of food breakdown first begins in the mouth. The tooth, tongue and jaw apply this process with a mechanical activity. While teeth provide mechanical digestion of food, saliva chemically digests food.

YUtta and esophagus): The tongue pushes the food towards the esophagus. Meanwhile, the trachea is covered with a laryngeal lid. When swallowed food reaches the esophagus, the esophagus contracts peristaltic movements, allowing the food to move towards the stomach.

Stomach: The stomach is an organ that stores food, breaks it down mechanically and secretes enzymes to digest proteins. The secretion of gastric juice is provided by the gastrin hormone. The stomach is an acidic environment. This acid kills bacteria in food and converts proteins into amino acids in enzymes in the stomach. Ultimately, a mixture of partially digested nutrients called chyme is obtained. This mixture is sprayed into the small intestine. Vitamin B12 is a vitamin that is released from the stomach.

Basalt is a fine-grained, dark-colored igneous rock made primarily of the minerals plagioclase and pyroxene.

The most prevalent rock on the surface of the Earth is basalt. Specimens range from dark green to brown to black in hue. Basalt is primarily made up of olivine, pyroxene, and plagioclase and is rich in iron and magnesium.

The majority of specimens are glassy, compact, and finely grained. They may also contain olivine, augite, or plagioclase phenocrysts and be porphyritic.

Basalt may have a texture that is coarsely porous due to holes caused by gas bubbles.

Therefore, Basalt is a fine-grained, dark-colored igneous rock made primarily of the minerals plagioclase and pyroxene.

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Tori created the following table to summarize the key features of the three types of magma, and corrections need to be made as follows: Gas content should be reversed ("high" under basalt and "low" under andesitic).

Different magmas have different gas contents, such as the basaltic magma, which has a high gas content that can result in explosive eruptions, and the andesitic magma, which has a low gas content and is less likely to cause explosive eruptions.

Hence, Tori created the following table to summarize the key features of the three types of magma, and corrections need to be made as follows: Gas content should be reversed ("high" under basalt and "low" under andesitic).

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The energy transformations that occur in the given devices are as follows:

Energy transformation refers to the processes by which one form of energy is transformed into another form.

The law of conservation of energy guides the various energy transformations that occur in the universe.

The law of conservation of energy states that energy is neither created nor destroyed but can be transformed from one form to another.

The energy transformations that occur in the given device are as follows:

In conclusion, energy transformations occur according to the law of conservation of energy.

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When the index and middle fingers press on the thyroid cartilage, vibrations occur in the lower part of the larynx, where the vocal folds are located.

The voice is produced in the larynx through the vibration of the vocal folds (popularly known as vocal cords), which perform their movement thanks to the flow of air that comes from the lungs during expiration and the action of the laryngeal muscles. This sound changes in the pharynx, oral cavity, nasal cavity and sinuses.

With this information, we can conclude that when the index and middle fingers press the thyroid cartilage, vibrations occur in the lower part of the larynx, where the vocal folds are located.

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Answer:

i would say the last one

Explanation: