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guapka [62]
3 years ago
14

How is HIV is a modern-day driving force for human evolution?

Biology
1 answer:
juin [17]3 years ago
4 0

Answer:

Testing positive for HIV means a high chance of death and a good chance of lower reproduction rates. But some people are immune to HIV, which makes them more evolutionarily fit, likely to live longer, likely to reproduce more, which would increase the frequency of the immune allele in the population. Over time, this increase in frequency of the gene that causes immunity could spread across the human race and cause it to evolve.

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Can someone Help me with this please
Harrizon [31]

Answer:

Explanation:

1> Because meat is more calorically dense than vegetables

2>Sunlight is necessary for plants to grow, and to provide energy to warm the earth's atmosphere. Light intensity controls plant growth. Light duration affects plant flowering and animal/insect habits.

3> The pyramid of biomass can be upright or inverted, but pyramid of energy is always upright.

4 0
3 years ago
Part C
IrinaVladis [17]

Answer:

                     (i) 1 moles of C

                     (ii) 4.5 moles of C

Explanation:

                   The Chemical equation is as follow,

                                             A + 2 B  →  C

This chemical equation can be translated as;

(i) 1 mole of A reacts with 2 moles of B

(ii) 1 mole of A produces 1 mole of C

(iii) 2 moles of B reacts with 1 mole of A

(iv) 2 moles of B produces 1 mole of C

(v) 1 mole of C is produced by 1 mole of A and 2 moles of B

Therefore to find the number of moles of C produced by 2 mole of B we will do following proportional method.

As,

                        2 moles of B produced  =  1 mole of C

So,

                    2 moles of B will produce  =  X moles of C

Solving for X,

                      X =  2 moles × 1 mole / 2 moles

                      X =  1 moles of C

Note:

         In above problem the given moles were the same as that present in balance equation so incase if the moles are different from that of the equation then the method shown above can be used to solve it.

Lets try it for 9 moles of B:

As,

                        2 moles of B produced  =  1 mole of C

So,

                    9 moles of B will produce  =  X moles of C

Solving for X,

                      X =  9 moles × 1 mole / 2 moles

                      X =  4.5 moles of C

5 0
3 years ago
In the product of mitosis, a human body cell has how many chromosomes?
Orlov [11]

Answer:

46

Explanation:

Mitosis cell divide and give us 46 chromosome in each two daughter cells.

5 0
3 years ago
Repeating the experiment multiple times
nalin [4]

Answer:

C) Practicing good scientific method and practices.

Explanation:

The text states, "repeating the experiment multiple times," as well as other preparations that a good scientist uses.

Doing something multiple times over is a good sign of a good scientific method.

Taking careful measurements, having several researchers run the same experiment, and only testing one variable at a time are all good practices that a scientist should use.

<em> </em><em><u>The</u></em><em><u> </u></em><em><u>correct</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>C</u></em><em><u>)</u></em><em><u>.</u></em>

7 0
3 years ago
Read 2 more answers
The law of original horizontality explains:
Ne4ueva [31]

Law of Horizontality in Sediments. ... The Law of Original Horizontality was first proposed by Danish geological pioneer Nicholas Steno in the 17th century. The law states that layers of sediment were originally deposited horizontally under the action of gravity.

7 0
3 years ago
Read 2 more answers
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