In this kind of population, the make up of the population's gene pool will remain virtually the same as long as these conditions hold. In this kind of situation, no evolution can take place, all thing will remain the same. For evolution to occur, competition must exist.
D! The Cell membrane in found in all cells, and it is a single (mono) layer.
Sweat glands. :)
Perspiration leaves the body through the sweat glands.
B. It was an explanation for how the earth originated.
