After darwin proposed his ideas about natural selection as a mechanism for evolution was generally considered a theory. why do we now refer to it as a theory?

Twin boys have girlfriends one of the couples have a baby would the dna of the lil baby be the same as the couples dna bc the boys are identical twins

What substance acts to prevent sudden ph changes in bodily fluids?

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.