Producers, like this plant, take in oxygen and release carbon dioxide during , just like animals and other living things.

a)decomposition. b)photosynthesis. c)transformation. d)cellular respiration.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Which locations on the map are low-pressure areas? a b c d e

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?