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ki77a [65]
3 years ago
13

1 ) HIV weakens the immune system by killing a. antibodies. c. helper T cells. b. B cells. d. killer T cells.

Biology
1 answer:
kondaur [170]3 years ago
5 0
1.)<span>a. antibodies
 2.)</span><span>b. its mechanism is well understood</span>
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tatyana61 [14]
The answer is D: solar energy is a renewable source
8 0
1 year ago
Please Help Mark and Vikki live in two different areas of North America. The temperature in Mark’s town today is 30°F. The tempe
uysha [10]

Answer:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

Explanation:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

See above

Please mark brainliest

<em><u>Hope this helps.</u></em>

6 0
3 years ago
You decide to study two species of birds, both of which form monogamous pairs (one male and one female). In species 1, you find
TEA [102]

In two species of birds, both of which form monogamous pair(one male and one female), In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair. In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. we would expect that female of species 2 would have sperm from multiple males in their reproductive tracts.

  • This is because the species 2 are having many eggs.
  • These eggs were formed due to fertilization with multiple male bird partners.
  • As a result we can expect eggs with different genotypes.

Thus from the above points we can conclude that two species of birds, both of which form monogamous pairs, female of species 2 would have sperm from multiple males in their reproductive tracts

Learn more about the fertilization in birds:

brainly.com/question/234670

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5 0
2 years ago
At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what could
marissa [1.9K]

Answer:

Bismuth strontium calcium copper oxide/ACM114901610 can be provided in Alfa Chemistry. We are dedicated to provide our customers the best products and services.

Explanation:

https://www.alfa-chemistry.com/bismuth-strontium-calcium-copper-oxide-cas-114901-61-0-item-195753.htm

8 0
3 years ago
Read 2 more answers
When a spring is compressed, the energy changes from kinetic to potential. Which best describes what is causing
Citrus2011 [14]
Answer: I think it's B

Explanation: power activates the spring, making it bounce or jump then goes to a stop
7 0
3 years ago
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