The peppered moth is often used as an example of natural selection. Most of the original moths had lighter wings, but as the soot from Industrial Revolution covered the trees, the number of darker moths increased. As the peppered moth evolved over time, its wings changed from light to dark so that it could better .

This question is incomplete because the options are missing; here is the missing section:

As the peppered moth evolved over time, its wings changed from light to dark so that it could better:

A) find food to eat.

B) combat pollution.

C) hide from predators.

D) withstand its climate.

The correct answer is C. Hide from predators

Explanation:

The Industrial Revolution implied high emissions of contaminants including soot, which derives from carbon. This caused the trees to have a dark color; in this situation, regular peppered moths could be easily found by their predators because their light wings contrasted the color of the trees. Due to this, moths with darker wings had a better chance to survive and reproduce, while those with lighter wings were vulnerable.

This led to natural selection as those with darker wings prevailed over time because these could better hide from predators and therefore they were more likely to survive and reproduce. According to this, the change in the color of the wings made moths better hide from predators because they could camouflage in the dark trees.

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4