Well If the Salmon die from lack of food from polution or something, and other animals benafit from the nutrience they carry. the rest of the ecosystem might parish, i hope that helped im not sure what was wanted
The mailman could not be the father.
The mother did not give the baby its B type blood, and a type O father could not have given this blood type. Therefore, the mailman did not father the baby.
Rare climate event caused by darwin finches of you look it up the whole article comes up on it
Is this a multiple choice question or...??
If not, I'd say, that its simple as scientists can easily decipher which variable caused the situations result. And thats because you may have one manipulated variable to be able to know the responding variable.
