Mount everest is the highest mountain in the world. what is the world’s second-highest mountain? a. k12 b. k2 c. m12 d. m2

Giving the right triangle jkl what is the value of cos (l)

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.