A species is a group of organisms capable of mating and producing offspring. This is another way of saying that a species is reproductively isolated.
D is the answer. Mutations can cause MANY problems.
D. Raising the activation energy
B. Because a physical reaction is a change that can be seen. This particular situation is happening over a period of time, it isn’t something that happens instantly. Also I it would have been a chemical reaction, it would have mentioned something about the state of an element or the temperature or something along those lines.
The DNA of the offspring is identical to that of its parents