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Explanation:

D which is the seminiferous tubules is where sperms are produced

Immature sperm cells are produced in testes' seminiferous tubules through spermatogenesis before becoming mature sperm cells, the correct option is D.

Immature sperm cells, also known as spermatids, are produced in the seminiferous tubules within the testes. The testes are male reproductive organs located in the scrotum, below the pe-nis. The process of sperm production is called spermatogenesis, and it involves the division and differentiation of germ cells within the seminiferous tubules. Initially, spermatogonia (immature germ cells) undergo mitosis to form primary spermatocytes.

These primary spermatocytes then undergo meiosis to produce secondary spermatocytes, and finally, these secondary spermatocytes develop into spermatids. The spermatids will then undergo further maturation and structural changes to become mature sperm cells, which are eventually released into the male reproductive tract during ejaculation for potential fertilization, the correct option is D.

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Answer:

four chambers

Explanation:

two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle.

Answer:

contagious

Explanation:

it goes through small rodents and mice

Water is an excellent conductor of heat for which animals may control temperature through transpiration and thus maintain a suitable body temperature.

The process of transpiration helps animals control body temperature by relating water which serves to conduct the heat and dissipate it into the surrounding environment to decrease the body temperature.

Therefore, with this data, we can see that transpiration helps animals control body temperature by increasing heat conductivity and thus removing the excess heat from the body.

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Answer:

An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated.

Answer:

Stops a tumor from growing

Explanation:

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Answer:

brown fur because alloys rodebts to hide more easily

Answer:

Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.

Explanation:

Answer:

I think A

Explanation:

The Tonsils are the only ones at the back of the throat, and that is where a virus will be encountered first, also, When you get a cold or something, the sore throat is one if the first symptoms, meaning that the body is fighting that virus

Answer: A, In the tonsils, which are located at the back of the throat

Explanation:

Answer:

b

Explanation:

(ver-TEE-brul KAH-lum) The bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone. The vertebral column encloses the spinal cord and the fluid surrounding the spinal cord. Also called backbone, spinal column, and spine. Enlarge

Answer:

Photosynthesis removes CO2 from the atmosphere and replaces it with oxygen.

Explanation:

Photosynthesis removes CO2 from the atmosphere and replaces it with oxygen. By respiration, O2 is removed from the atmosphere and replaced with CO2. However, these processes are not balanced. Some organic matter is not oxidized. (I'm very sorry if I'm wrong but I believe it's that)

The process that takes CO2 out of the atmosphere is Photosynthesis because photosynthesis removes all the CO2 from out the atmosphere and it is replacing the CO2 with O2. When we breathe we take O2 from the atmosphere and replaces it with CO2.

Answer:

Population, community, or environment

Explanation:

It depends on if you are asking the amount of the same species, the place they live in,  or if you are asking different organisms

If you are talking about the same species than the answer is population

If you are talking about different species interacting it would be community

If you are talking about the place in which they live, it would be environment :)

Hope this helps, I'm just a little confused on the question :)

Answer:Our internal body temperature is regulated by a part of our brain called the hypothalamus. The hypothalamus checks our current temperature and compares it with the normal temperature of about 37°C. If our temperature is too low, the hypothalamus makes sure that the body generates and maintains heat.

Explanation:brainliest?

Answer:

Thermoregulation

Explanation:

We have a mechanism called Thermoregulation, where we maintain our body temperature with tightly controlled self-regulation thats independent of external temperatures.

Answer:

Myth: A dead organism is the same as a nonliving thing in science.

Fact: A non-living thing can be very different than a living thing.

Explanation:Evidence: Once- living things are made up different things then non-living things. While a rock is a nonliving thing, it doesn't contain the same build as living things. If we were to look at a dead once living being, we could probably conclude that it was a living thing since it contains things like cells, proteins, etc. That other thing, like dirt, wouldn't have.

Answer:

Dragon

Explanation:

Draco's name comes from the Latin for the dragon, and Draco is also another constellation named by astronomer Ptolemy.

Explanation:

Carbon dioxide is needed for photosynthesis, but oxygen is needed for cellular respiration. Assuming there is still oxygen then the plants will produce carbon dioxide and some of it will be reabsorbed by photosynthesis during daylight. However, ultimately there wouldn’t be enough carbon dioxide for the plants to grow and they will start to die. Some plants have evolved a C4C4 photosynthesis pathway so they only require a small amount of CO2CO2 to survive, however they do still require more than zero CO2CO2.

So basically you killed off all the plants and all the other non-microbial life died of starvation shortly afterward.

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Answer:

Oceans are important for ivaporation of the water cycle.

Explanation:

Oceans are important to the water cycle because most of Earth's surface is ocean water, and the oceans provide most of the water vapor. The water cycle is the process which water leaves the Earth's surface, enters the atmosphere, and is returned to the surface.

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Answer:

patients complain about acid reflux

Explanation:

independent variable is the variable that "I" control

dependent is the variable that is being measured.

Manganese dioxide and catalase are different because manganese dioxide is an inorganic catalyst. Conversely, catalase is an organic enzyme.

An enzyme is an organic catalyst (i.e., a protein) that acts to speed up a chemical reaction by lowering its activation energy.

Catalase is an enzyme that catalyzes the decomposition of hydrogen peroxide (H2O2) into oxygen (O2) and water (H2O).

Manganese dioxide also catalyzes the decomposition of H2O2 to oxygen and water, but it is an inorganic compound.

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Answer:

I think the answer is A

I could be wrong

A slow and gradual type of eruption is happening with this volcano. The magma of which is very viscous so the lava slowly flows very far from the crater.

A volcanic eruption may be characterized as an introduction to the earth's crust through which lava, volcanic ash, and gases exit on the ground surface.

No, this volcano is not likely to have a massive eruption. It is a type of Shield volcano which produces low viscous magma and spreads far from the crater gradually.

Therefore, it is well described above.

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Answer:

The  Jacobson's organ is useful in the progress of communicating chemical

message, such as readiness for ______ activity, between members of the same species. The organ helps hunt and attack their prey

Explanation:

Photosynthesis usually occurs in green plants' chloroplasts .So just observe that you can find as no images attached

Answer:

False

answer is FALSE. Metals are usually good conductors, while nonmetals are not usually good conductors.

Explanation:

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Answer:

The water-vascular system, which functions in the movement of tube feet, is a characteristic feature of echinoderms, and evidence of its existence has been found in even the oldest fossil forms.

Ampulla structure controls the movement of tube feet. So, the correct option is (D).

Tube feet are defined as the small active tubular projections present on the oral face of an echinoderm. It is present on the arms of a starfish, or sea urchin, sand dollar, and sea cucumber. Although present on brittle stars, they are more discreet, and have only a feeding function in feather stars.

Starfish belongs to the phylum Echinodermata whose body is covered with spines and move with the help of tube feet. It help the urchin to move but also used to grasp food. This is the part of the respiratory or breathing system.

The tube feet can expand or contract which is based on the volume of water i.e. hydrostatic pressure present in the system of the arm.

Thus, ampulla structure controls the movement of tube feet. So, the correct option is (D).

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Answer:

D. variety of mature plants and trees

Explanation:

because climax, ecology, the final stage of biotic succession attainable by a plant community in an area under the environmental conditions present at a particular time.