Energy from the sun heat and chemicals
They might go extinct if they can't keep up with the competition
A polygenic trait is a trait controlled by many (poly) genes. Human skin color is an example; it thought to be the controlled by about 12 genes.
hope it's best answer
Answer:
true
Explanation:
the equator is warmer than the poles because the equator is significantly closer to the sun than are the poles (i.e. the equator "bulges out" toward the sun)
