Several studies have shown an increase in atmospheric carbon dioxide. these increased levels play a direct effect on biogeochemical cycles. in the water cycle, with increased co2 levels, plants decrease their rate of thereby holding onto the reactants of photosynthesis. because plants hold onto these reactants, increases because plants don't take up the water

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

the answer would be knowledge about cars!