Question

the thumb is an adaptation caused by natural selection. what is natural selection? organisms that are the largest survive organisms with no mutations survive organisms that are better adapted to their environment survive and reproduce - survival of the fittest rewatch submit

Explanation:

Natural selection is the process by which organisms better adapted to their environment tend to survive and reproduce more successfully - often referred to as "survival of the fittest". Size is not the sole determinant of survival, and mutations are a natural part of genetic variation and do not prevent survival in all cases.

Answer:

Organisms that are better adapted to their environment survive and reproduce - survival of the fittest