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Effectus [21]
1 year ago
15

Explain how the human immune system responds to a viral infection.

Biology
1 answer:
nikdorinn [45]1 year ago
8 0
Infected cells create and release small proteins known as interferons, which help the immune system fight viruses. Interferons stop viruses from replicating by interfering with their ability to multiply within infected cells.
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Charles darwin viewed the fossil record as
Reil [10]
<span>D. evidence that are acquired through use or disuse. Since it is believed that some parts of an organism developed through its need. For example a giraffe got its long neck becuase of reaching for a tree that could produce its food. Another example is the leg of a human which developed because of its need to walk. It was believed that the parts of the an organism did exist or did vanish depending if it was no longer used or it was necessarily needed to survive.</span>
4 0
3 years ago
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In the Northern Hemisphere, during which season does the Earth reach its greatest distance from the Sun?
liberstina [14]
I believe it's during the Winter season
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2 years ago
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which is a fresh water region characterized as a large standing body of water? (A) lake (B) river (C) ocean (D) stream /// pleas
Nesterboy [21]
The Answer is on the Picture

3 0
3 years ago
For a wrestler to qualify in his weight class, he needs to weigh more than 165 pounds but less than or equal to 185 pounds. He c
fomenos

Answer: To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.

Explanation:

Current weight of Wrestler = 189 pounds

Maximum Weight required to get qualify = 185 pounds

Weight required to reduced by wrestler= 189 pounds - 185 pounds = 4 pounds

0.5 pounds is reduced in 1 week

1 pound will  reduce in =\frac{1}{0.5} weeks= 2 weeks

4 pounds will reduce in = 2 weeks × 4= 8 weeks

To be in the qualifying weight range wrestler have to lose weight for 8 weeks more.

3 0
3 years ago
Read each description below regarding the the cns control of the ans. then click and drag each into the appropriate category bas
Aloiza [94]
Cerebral cortex
1. Emotion can invoke an autonomic response.
2. Sexual thoughts or image which can increase blood flow to the genitals.

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3. It is the integrating center for thermoregulation.

Brainstem.
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