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Katen [24]
3 years ago
6

Why is darker skin an advantage in place with a lot of sun

Biology
2 answers:
aleksandrvk [35]3 years ago
8 0

Answer:

High amounts of melanin.

Explanation:

Dark-pigmented people living in high sunlight environments are at an advantage due to the high amounts of melanin produced in their skin. The dark pigmentation protects from DNA damage and absorbs the right amounts of UV radiation needed by the body, as well as protects against folate depletion.

Naya [18.7K]3 years ago
5 0
What he said ig absorbs uv radiation
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Is a superficial fungal infection found on the head.
Marianna [84]

Answer:

Option B, Tinea capitis

Explanation:

Superficial fungal infection of skin of head or scalp is known as Tinea capitis.

These fungal infection attack the hair shafts and follicles and is a superficial form of mycosis or dermatophytosis.

Tinea cruris is the superficial infection of genitals, buttocks and inner thighs regions. Hence, option A is incorrect.

Tinea pedis is the superficial infection of foot and regions between the phalanges. Hence, option C is incorrect.

Tinea corporis is the superficial infection of arms, legs or skin. Hence, option D is incorrect.

Thus, option B is correct.

4 0
3 years ago
Which stage of the human immunodeficiency virus (HIV) would a client with a CD4 T cell count of 325 cells/mm3 be classified
kirza4 [7]

Based on the CDC guidelines a person with a CD4+ cell count between 200-400 is regarded as being in <u>the second stage</u> of the HIV infection.

Acquired Immunodeficiency Syndrome

Acquired immunodeficiency syndrome (AIDS) is a condition caused by HIV (human immunodeficiency virus). AIDS is a chronic disorder and can become life-threatening for the infected person. The HIV viruses reproduce inside the host and while doing so they destroy the CD4+ immune cells which reduce the person's ability to fight against other diseases.

CD4+ cell count and AIDS

According to the CDC (U.S. Centers for Disease Control and Prevention), HIV infection is categorized into different stages based on the number of CD4+ cells.

  • Stage 1: - CD4+ cell count is more than 500 per microlitre. There are no symptoms or AIDS-related conditions.
  • Stage 2: - CD4+ cell count is more than 500 per microlitre. There are no symptoms or AIDS-related conditions.
  • Stage 3: - The CD4+ cell count falls below 200 and AIDS-related symptoms and conditions are present.  

Learn more about HIV infection here:

brainly.com/question/13662165

#SPJ4

7 0
2 years ago
What is the fitness of an organism
sashaice [31]

Answer:

Darwinian fitness

Explanation:

it is able to produce offspring of itself and help it to Maintain the population of an organism

hope it helps u

6 0
3 years ago
Which is a physical hazard?BacteriaMoldCleanerFilet bone
Readme [11.4K]

There are three types of hazards

- physical such as knives, filet bone

- chemical such as cleaner, chlorine (chemical substances)

- biological such as bacteria, mold (live organisms)

Because filet bone is a physical hazard the answer is D (filet bone)

6 0
1 year ago
Discuss what is meant by heterozygote advantage and use sickle-cell anemia as an example
vodomira [7]
When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes.  A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes. 
6 0
3 years ago
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