Anyone have the answer???????????

Answer: A.  PULMONARY VALUE

              B.  TRICUSPID VALUE

              C.  SEPTUM

              D.  BICUSPID VALUE

              E.  AORTIC VALUE

              F.  AORTA

Explanation:

Heart is the organ responsible for pumping blood throughout the body. Label A is pulmonary valve, Label B is tricuspid valve, Label C is septum, Label D is bicuspid valve, Label E is aortic valve and Label F is aorta.

Valves regulate the flow of blood coming from and to the heart. There are four valves in heart. These are as follows:

Septum is the tissue that separates left and right ventricles while aorta is the main artery which carry blood from heart to tissues.

Thus, label A is pulmonary valve, label B is tricuspid valve, label C is septum, label D is bicuspid valve, label E is aortic valve and label F is aorta.

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Answer:

Amount of calories in that butter is 4500cal

Explanation:

It's relatively simple:

You already have energy density(energy divided by mass)

You already have butter density (mass divided by volume)

And you have dimensions of that butter

From those dimensions (5cmx5cmx20cm) you can calculate the volume, which is 500cm³. Then, using that volume you can calculate the mass (density = mass / volume, which means that mass = density * volume) and that is 450g. Now that you have the mass, you can calculate the amount of calories in that butter (energy density = energy/mass, which means that energy = mass * energy density) and that is 4500cal.

Osmosis is the process of diffusing water across a membrane.

The correct answer is Osmosis.

Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called osmosis.

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I don’t know what the options are, but remember viruses are:

-nonliving (they cannot reproduce without a host)

-surrounded by a protein coat

-composed of DNA or RNA

-able to live for years

-unable to thrive outside of the host cell

-classified into 4 structural classes (helical symmetry, isometric symmetry, enveloped, bacteriophage)

Answer:

B)Photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.

Explanation:

Only option B satisfies the answer to the question.

We know that photosynthesis is the process whereby green plants manufacture their foods in the presence of carbon dioxide and sunlight. Carbondioxie in the environment is used to manufacture food in plants. The bye product of photosynthesis is oxygen gas. Oxygen gas is used for aerobic respiration in animals and is essential for their life. This way photosynthesis adds to the pool of oxygen in the atmosphere and aerobic respiration removes from the pool.

Answer:

B

Explanation:

it's the only answer that fully answers this question. and i took the test

Answer:

Arteries carry oxygen-rich blood away from the heart.

Explanation:

Blood vessels are part of our circulatory system and help in the blood distribution in whole body. There are 3 types of Blood vessals.

1. Arteries

2. Veins

3. Capillaries

Arteries are the vessels that carry the oxygen rich blood from the heart to the other parts of the body. While veins have the de-oxygenated blood. Capillaries are very small vessels that are the site of transfer between cell and blood. Nutrients from blood for example glucose are transferred to the cells.

Answer:

Because they are the most destruction waves

Explanation:

Surface waves travel just below the earth’s surface.  Examples of surface waves are Rayleighs and Long waves. Rayleighs cause ripples on the ground while long waves move the ground horizontally perpendicular to the direction of travel of the wave. Therefore, these waves are capable of destroying the foundations of structures and hence causing their collapse. Studying these waves allow these professionals to design foundations strong enough to withstand these waves.

Architects and engineers focus on surface waves due to their resonating effects that can cause building collapse during earthquakes, with the risk heightened by factors such as building height and roof design.

Architects and engineers are highly concerned about surface waves because these waves carry significant energy which can resonate with structures, leading to potential collapse during events like earthquakes. Resonance occurs when the driving frequency of surface waves matches the natural frequency of a building, leading to a large increase in vibration and possibly causing the structure to fail, especially if the building's height matches the condition for establishing a standing wave.

Furthermore, because surface waves can also experience constructive interference due to reflections off denser subsurface materials, the resulting amplification of wave energy at certain points can lead to disproportionate damage, sometimes further away from the earthquake's epicenter. Additionally, large surface areas of roofs, like those of gyms or supermarkets, are susceptible to collapse as they may resonate at the frequencies of the earthquakes. Therefore, understanding wave mechanics is crucial in designing buildings that can withstand the destructive power of surface waves.

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Answer:

Could you please add more to the question? I'd love to help you.

The ecological role of animals includes contributing to their ecosystems, maintaining their internal environments, and certain important species helping maintain ecological balance. Changes in energy or matter availability can affect their ecosystem and biodiversity levels can be maintained through measures like habitat restoration and conservation efforts.

The ecological role of an animal can range from being key contributors to their ecosystems, like pollinators of plants, to being a part of complex food chains. They also maintain their internal environments using mechanisms like negative feedback. Certain species, which are termed as keystone species, play a critical role in maintaining ecological balance, for example, the reintroduction of wolves in Yellowstone Park led to an increase in biodiversity.

Animals also impact their surrounding environment and ecosystem. Changes in energy availability or matter in an ecosystem can result in significant effects on all organisms within the ecosystem. For instance, a decrease in available prey can reduce predator populations. To ensure the survival of multiple species and retain the biodiversity levels, measures such as habitat restoration can be taken. Efforts include the reintroduction of extinct species into their habitats and creation of conservation areas.

Lastly, humans also play a significant role in conservation and creating public awareness through institutions like zoos and through roles like ecologists who undertake various efforts to manage natural resources and develop environmentally sound policies.

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B. Chemoautotrophs is the answer

Answer: a. cyanobacteria

Explanation:

Cynobacteria is considered to be the first organism on earth which was capable of producing it's own food by the process of photosynthesis. The cynobacterial strain used to exists on earth around 3.5 billion years ago. These were the first unicellular prokaryotic organisms. They had a large number of colonies. These were responsible for the liberation of large amount of oxygen in the oxygen deficient primitive earth atmosphere.    

Explanation: The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.

Answer:

Deletion of two nucleotides.

Explanation:

Every amino acid coded by 3 nucleotides.

12:3=4 (amino acids)

6:3=2 (2 amino acids)

3:3=1 (1 amino acid)

After all of these mutations sequence amino acids change, but after continues stay the same.

Only deletion of 2 nucleotides will completely altered all amino acids encoded without mutation.

A frameshift mutation, altering all subsequent amino acids, can be caused by the deletion of two nucleotides or the insertion of a number of nucleotides not divisible by three.

In the context of DNA sequencing, a mutation that changes all amino acids following the point of mutation is characterized as a frameshift mutation. This type of mutation is caused by the insertion or deletion of nucleotides in a DNA sequence that is not divisible by three. The options which could cause a frameshift mutation are either a deletion of two nucleotides or an insertion of a number of nucleotides not divisible by three (for instance, an insertion of six nucleotides would not cause a frameshift mutation as it's divisible by three, but an insertion of twelve nucleotides also wouldn't cause a frameshift mutation for the same reason). Thus, the correct answer would be a deletion of two nucleotides.

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Answer:

D. a mutation causing uncontrolled cell division

Explanation:

A mutation that causes uncontrolled cell division leads to cancerous growths.

This means that an organism with this mutation shall have cancer.

Cancer is a disease caused by the abnormal multiplication of cells in an organism.

This mutation is harmful since it leads to the organism becoming sick and eventually dying.

Answer:

D.) a mutation causing uncontrolled cell division

Explanation:

PLATO

Answer:

The independent variable is "controlled" or held constant in the control group. A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an experiment.

Explanation:

Answer:

Explanation:

A control group is a standard group which is used for the purpose of the experiment. It does not receive any manual treatment by the experimenter. Instead it is kept as a standard for comparison of the other variables.

The multiple control groups are used in the experiment so as to increase the accuracy, consistency and reliability of the results. As if one control group contains contaminants it may produce errors in the experiment. To avoid error and enhance error and increase accuracy multiple control groups are used.

Answer:

A.

Explanation:

If there are no decompsers, then B. D is mostly likely decompsers. C is most likely the plants. B, is the insect, also the primary consumer. A, should be the bird, if the decompser is included.

The birds feed on insects, thus, they will occupy the B level of the pyramid. D would represent corn and C would represent the insects that feed on corn. The A-level will be represented by a predator which feeds on birds.

An ecological pyramid is defined as the graphical representation of the relationship between the different living organisms at different trophic levels.

A lot of times, humans finished up in A level because people are the primary consumers of various animals and even vegetables.

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this is an opinion. we cant make an opinion for you. just state the pros and cons of animal testing and your overall opinion on it.

Answer:

Option B, Adults out competing offspring for resources

Explanation:

In a symbiotic relationship two species/organisms live together in a mutual relationship in which either

a)  Both of the species get benefitted

b) One of the species get benefitted and the other species get harmed

c) One of the species get benefitted and the other species is neither harmed nor benefited.

In this case , the worm with in the cow's body get benefited while the cow herself gets harmed as her food is stolen.

Hence, option B is correct.

wood- renewable resource that can be burned

oil- spills can destroy aquatic ecosystems

hydroelectric power- uses the kinetic energy of water

nuclear power- creates radioactive waste

coal- burning releases CO2 into the air

Answer:

wood- a renewable resource that can be burned

oil- spills can destroy aquatic ecosystems

hydroelectric power- uses the kinetic energy of water

nuclear power- creates radioactive waste

coal- burning releases CO2 into the air

Explanation:

Answer:

It has a greater length to reduce the effort as more the distance between the fulcrum and point of action more is the moment of force and hence the effort applied will be less.

The metal is harder than fabric, so, with longer handles the scissors can apply more force than would be needed for soft fabric.

Answer:

Egg Cells and Sperm Cells

Explanation:

Gametes are sex cells.

Answer:

Number 1 is warm and moist

Explanation:

Answer:

Kind of late but RNA codes for proteins.

Explanation:

long answer

DNA is transcribed to RNA and then mRNA (messinger RNA) with the help of ribosomes and tRNA (transfer RNA) add amino acids into a polypeptide chain (a linear line of amino acids) which then folds into a protein

The skeletal movements of muscles are mostly voluntary. That is why skeletal muscle is also called voluntary muscle. Their action is normally controlled by an individual's will.

the awnser is carbon dioxide.

Answer:

◎ oxygen

◎ calcium

◎ carbon tetrachloride

◉ carbon dioxide

Explanation:

Once animals die, they release carbon compounds into the atmosphere and into the ground as they decompose.

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Final answer:

Wind is a renewable resource that can be replenished naturally at a pace that matches or exceeds its usage by humans, making it sustainable and inexhaustible. Other examples are sunlight and tidal movements, all harnessed for alternative energy sources.

Explanation:

An example of a renewable resource is wind. Wind is a natural resource that is replenished by natural processes at a rate that is equal to or faster than it is consumed by humans. It is harnessed through wind turbines for energy development and is considered an alternative energy source that is sustainable and in no danger of being used up. Other examples of renewable resources include sunlight, which can be captured for solar power, and the movement of ocean tides, which can also be tapped for energy.

Unlike nonrenewable resources such as coal, which exist in fixed amounts and can be depleted, renewable resources like wind, sunlight, and the kinetic energy of water can be utilized repeatedly without running out. In addition to wind and solar energy, sustainable materials like wood, cork, bamboo, and certain crops can be considered renewable if they are managed in a way that allows them to regenerate and meet the needs of both present and future generations.

Answer:

The snake population will increase

Explanation:

The snake population will increase will increase because the mice will have more feed which will cause the mice population to increase. if the mice population increases than the snakes would have more food, so their population will also increase.

When the crop will plentiful, the snake population will increase. The correct option is A.

A food chain is a chain that includes the transfer of energy from one level to another level. All animals and plants are connected to each other by the food chain.

As, the snake feed on mice, if the crops will increase the population of mice increase, and when the population of mice increases the snake population will also increase indirectly.

Thus, the correct option is A: the snake population will increase.

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Answer:

When the cell becomes too large, the DNA cannot keep up with demands.

Explanation:

What is DNA Overload :

As the cell grows, the demands are placed on the cell's DNA. If this ratio gets too low, the cell cannot efficiently move materials in & out of the cytoplasm. This process is called DNA overload.

THE CELL CYCLE

Cell cycle is a series of cellular events during which the cell grows, prepares for division & then divides.

Cell Growth and Division

When the cell becomes large,  DNA and the more trouble the cell has moving enough nutrients and wastes across the cell membrane.

I'm pretty sure the answer is B. Invest in alternative energy sources that do not burn fossil fuels. The reason I would pick B is because in Antarctica the ice is melting more and more over time because, cars and factors etc are burning fuels which result in more damage to the ozone layer.

Answer:

B

Explanation:

Answer:

The presence of smog in the atmosphere and exploitation and burning of coal

Explanation:

The "smog" can be observed as dark low clouds in the cities. These are formed by accumulation of gases such as: CO2, soot, smoke and dust in suspension. If the atmospheric concentration of the main gases responsible for the greenhouse effect that was maintained in 2016 is maintained, the average temperature of the Earth will have risen 1, 3 ° C in 2020 and 3 ° C in 2070.

In the process of using coal, important environmental damage occurs because when burning it releases large amounts of greenhouse gases.

The damage caused by coal combustion is much greater when poor quality fuel is used, because the impurities it contains are converted into sulfur oxides and other toxic gases.

In the production of electricity, about 5 tons per year are used, causing havoc in terms of pollution

Human activities, specifically the burning of fossil fuels, have led to increased greenhouse gas emissions, which are measured using ice cores and documented emission statistics, showing a profound influence on global climate change.

Two precise and measurable examples of human activities influencing global climate change due to greenhouse gas emissions are:

These examples demonstrate the large-scale impact of human behavior on the climate and underscore the necessity for reducing emissions to mitigate climate change.

Answer: Polymerization

Explanation:

because....

The formation of large molecules takes place by the addition of smaller molecules together. These small molecules are called as monomers and larger molecule formed by the addition of these monomers are called as polymer.

The process of formation of polymer from monomers is known as polymerization.

* therefor, the correct answer is Polymerization.

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Through polymerization, larger molecules are formed.

Polymerization is a chemical reaction in which relatively small molecules, known as monomers, combine to form a very big chainlike or network molecule, known as a polymer.

Polymerization resulted in huge molecules. The process of polymerization is the creation of polymers. These polymers are then used to create a variety of plastic goods. Smaller molecules, known as monomers or building blocks, are chemically joined to form larger molecules, or macromolecules, during polymerization.

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Answer:

1.  True

2.  class-order-family

3.  genus-species

Explanation:

Final answer:

True, living things are classified by common characteristics. The levels of classification include Kingdom, Phylum, Class, Order, Family, Genus, and Species. 'Class', 'Order', and 'Family' are correct answers; 'Homo sapiens' is the binomial name for humans; and a 'kingdom' is a taxon within a domain.

Explanation:

1. The statement that living things are classified by the characteristics they have in common is true. Living organisms are grouped based on shared features, which helps scientists communicate about them and better understand their relationships and evolutionary history.

2. The seven major levels of classification include Kingdom, Phylum, Class, Order, Family, Genus, and Species. Therefore, Class, Order, Family are also major levels of classification, whereas 'Level' is not a recognized category in this context. Genus and Species are the two other levels alongside the ones mentioned.

3. In the binomial nomenclature, Homo sapiens is the correct scientific name for humans, where Homo is the genus and sapiens is the species.

4. A kingdom is correctly defined as a taxon within the broader category of a domain.

5. Lastly, similar classes are grouped into a Phylum in the Linnaean system of classification.