7. Human beings are our closest living relatives, the chimpanzees, are more than 95% identical in our overall DNA. Given how much of your DNA you got from each of your
parents, are you more closely related to a chimp or your parents? Explain this apparent
contradiction.

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian