In certain fireworks potassium nitrite breaks down into potassium oxide, nitrogen and oxygen. This is an example of a reaction. The opposite process is a reaction. options for both blank spots are the same.

A. combustion
B. decomposition
C. replacement
D. synthesis

Select the correct answer from each drop down menu.

HELLL PLEEASEE​

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.