What is the leading term of the following polynomial? f(x)=5x4-3x3+9x2+6x-7 a.5x4. b.-3x4. c.9x2. d.6x

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

Actual age your first developed of age well comparison age refers to absolute age true or false

Which characteristics are typical of a human population in the postindustrial stage?