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Fed [463]
3 years ago
9

The _______ system helps guard against infection, protect from UV radiation, and regulate body temperature? A. integumentary B.

immune C. circulatory D. endocrine
Biology
2 answers:
KiRa [710]3 years ago
6 0

Correct answer: A). Integumentary

The integumentary system composed of the hair, nails, skin, glands, and nerves. Its main function is to provide protection to the body against disease-causing infections such as bacteria and viruses and act as a barrier to harmful ultraviolet radiations, which are coming from the Sun.

It works in coordination with all the other system of the body in order to maintain internal body temperature which is essential for normal body functions. It also helps the body to eliminate waste products.

Hence the correct answer would be option A.


Molodets [167]3 years ago
5 0

The immune system helps guard against infection, protect from UV radiation, and regulate body temperature.

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3. The mechanism in which organisms best suited for their environment survive<br> and reproduce.
lys-0071 [83]

The mechanism in which organisms best suited for their environment survive

and reproduce <u>NATURAL SELECTION.</u>

<u></u>

Explanation:

When individuals in a population compete for resources or live in their environment, the individuals with the slightest advantage over the others have an increased chance of reaching maturity and  reproducing to passing down their genes to the next generations.

Natural selection works on the variations of the population to ‘select’ the best alleles of genes in the population that offer an advantage in ‘survival for the fittest’. This how natural selection fits a population to its environment. The greater the variation within a population, the higher its capacity to adapt to changes in the environment.

Learn More:

For more on natural selection check out;

brainly.com/question/1184863

brainly.com/question/875198

#LearnWithBrainly

5 0
3 years ago
Describe the “inner life of a cell
Jet001 [13]
Both of the cells are eukaryotic, both have:
Cell Membrane
Nucleus
Endoplasmic reticulum
Mitochondria
Lysosome
Golgi Apparatus
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Cytosol
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And that it's my notebook contain these only
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4 0
3 years ago
What did Mendel call plants that always produce the same color of flowers when allowed to self pollenate
Kamila [148]

Hello!

The answer to this question is;  A

Mendel had true-breeding pea plants that, if allowed to self-pollinate, would produce offspring identical to themselves.

Have a good day :)

3 0
3 years ago
Read 2 more answers
According to the nebular theory, a solar system begins when an interstellar cloud, containing approximately 75% hydrogen, 25% he
azamat

"Gravitational attraction" is initially responsible for the formation of the clumps of matter within this interstellar cloud.

<u>Answer:</u> Option C

<u>Explanation:</u>

About 4.6 billion years ago, the solar systems were a bunch of gases and dusts, referred to solar nebula. Gravity squeezed the material as it started to rotate, creating the sun at the middle of the fog.

The rest of the material began to accumulate with the sunrise. The smaller particles moved together to form larger particles that were connected by gravity. As lumps develop, gravity increases and turns into kinetic energy of moving particles that collide and produce heat.

4 0
3 years ago
A person has a bone fracture and takes a painkiller that causes blood-vessel constriction. Why might this painkiller actually sl
Elan Coil [88]
In contrast to compact bone, spongy bones does not contain true Haversian systems( tiny tubes that form a network in bone and contain blood vessels) but consist of an irregular lattice of thin plates of bone called trabeculae.The spaces between trabeculae are filled with marrow. The cells of the red marrow are responsible for producing blood. Within trabeculae  lie lacunae which contain osteocytes.<span> Blood vessels from the periosteum penetrate through to the spongy bone,  and osteocytes in the trabeculae are nourished directly from the blood circulating through the marrow cavities.</span>
6 0
3 years ago
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