1. Green, because it serves as a perfect camouflage against prey in vegetations.
2. It is a process whereby a breeder of animals or plant cultivator, chooses to breed between different species for their characteristics that are inheritable.
3. Mutations is an evolutionary process that helps a specie better adapt to their environment. DNA changes causes by mutation can help lighten or darken colour pigment. Like in the dark-coated mouse, where 9 changes to the DNA coding for color makes its fur lighter for better camouflaging.
Brain makes your movements but heart is what makes you live so its really up to you to choose which one you find more important both are necessary though so whether you pick brain or heart you will get a good grade as long as you explain why you choose it