Why do pigs wallow in the mud?

a. to keep clean
b. to cool themselves down
c. to get the nutrients they need
d. to get better sleep

will mark brainliest if correct!

The answer is D i think

Based off the appearance of the peppered moth, its markings would not be advantageous in a lush green ecosystem . this could cause their population to decrease as the camouflage factor would be somewhat useless and make them much more vulnerable to predators .hope this : )