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which of the following is true of natural populations? a. populations are all the individuals of a species living in a defined area. b. population are all uniform in size. c. viable populations exhibit little, if any, genetic variation.

The human body maintains a temperature of around 98.6 degrees at all times. enzymes are involved in almost every chemical reaction in the body. which of the following describes the connection between these two statements? a. enzymes function best at a specific temperature. b. the body needs to be warm to prevent hypothermia. c. the body is kept relatively warm to prevent too much enzyme action. d. there is no connection between the two statements.