Natural Selection is based on all of the following except: a) the best adapted individuals tend to leave the most offspring
b) populations tend to produce more individuals than the environment can support
c) individuals adapt to their environments and therefore evolve
d) individuals who survive longer tend to leave more offspring than those who die young

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels