The girl has a widow's peak because of her O genes, which are located in chromosomes in her cells' nuclei O hormones, which are passed on from previous generations O nutrition, and indicates her needs are met O environment, in which it is an advantage​

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).