The answer is C barriers around mating
An apple can have more than one type of energy by giving you more fuel to work with. It can take the place of eating breakfast. good luck.
If AMOC and the Gulf Stream do become weaker, the probability is that Northwest Europe is going to get cooler, or not warm as much as it otherwise would under global anthropogenic climate change. And if sea level is a little bit higher, maybe because of the Gulf Stream weakening, it only makes matters worse.
Primary productivity is a term used to describe the rate at which plants and other photosynthetic organisms produce organic compounds in an ecosystem. There are two aspects of primary productivity. hope this helps!