Biogeochemical Cycles

Front

Photosynthesis is an important part of the ______ cycle

Back

Carbon

Front

In photosynthesis, plants use __________ to make _________

Back

water, sun, and CO2; oxygen and sugar

Front

Decomposition is part of all cycles except _______

Back

the water cycle

Front

The factor that causes the most changes to the cycles is ______ (Options: weather, humans, temperature, time)

Back

humans

Front

Earth's atmosphere helps to ___________

Back

keep radiation out and heat in

Front

Carbon dioxide is _______________

Back

a greenhouse gas

Front

Coal, natural gas, and oil are examples of _________

Back

fossil fuels

Front

Oceans and other large bodies of water bind carbon dioxide into ___________

Back

carbonic acid

Front

In the nitrogen cycle, the important work is done by ________

Back

bacteria

Front

In evaporation, water _______

Back

turns from a liquid state to vapor (gas)