How do heredity and environment interact?

The environment of a species can directly impact the hereditary traits that are passed down from generation to generation. Suppose there is a group of birds that live on a particularly cold island. If the first birds to arrive on the island had a small amount amount of feathers, it is likely that the birds adapted and passed traits down to their offspring that then allowed for future generations to have either more feathers or fluffier feathers to protects against the cold of their environment.

Explanation:

i think life is life. many could argue that life is ‘nice’ or ‘fun’ but in the end, it is immaterial and will end. nihilism is my philosophy. nothing matters in the end so why make an effort?