Heritability of intelligence refers to: a) the extent to which a person's intelligence is caused by genetics. b) the effect of adoption on the intelligence of adopted children. c) the amount of group variation in intelligence that can be attributed to genetics. d) the extent to which the quality of schools and other environmental factors determine intelligence. e) the correlation between intelligence test of identical twins.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."