Which of the following does not describe chemical energy being released? a. gasoline being burned. b. food being digested. c. battery powering a phone. d. wind blowing a windmill.

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

What layer of the atmosphere is directly above the troposphere?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?