BIOGEOCHEMICAL CYCLES

Front

What are biogeochemical cycles?

Back

Biogeochemical cycles are natural processes that recycle nutrients in various chemical forms from the environment to organisms and back to the environment.

Front

What is the largest reservoir for the phosphorus cycle?

Back

Rocks and minerals.

Front

What is released by the weathering of rocks?

Back

Phosphorus.

Front

What percentage of the atmosphere is composed of nitrogen gas?

Back

78%.

Front

What happens when one animal consumes another?

Back

Energy is transferred through the food chain.

Front

What happens to nitrogen when organisms die and decay?

Back

Their nitrogen returns to the soil as ammonium.

Front

What is the role of decomposers in biogeochemical cycles?

Back

Decomposers break down dead organisms, returning nutrients to the soil and making them available for plants.

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged between the atmosphere, land, water, and living organisms.

Front

How do plants contribute to the nitrogen cycle?

Back

Plants absorb nitrogen from the soil, which is essential for their growth and development.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting nitrogen gas from the atmosphere into ammonia or related compounds in soil.