Describe the potential energy of the reactants and the products of an endothermic reaction . Include how the temperature changes as the reaction progresses.

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

i'd say that the moon rock is about 2.2 billion years old.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.