Biogeochemical Cycles 20

Front

What process removes nitrogen and phosphorus from dead plants and animals?

Back

Decomposition

Front

Where is carbon stored in the environment?

Back

Fossil fuels, wood of trees, calcium carbonate (shells and bones), and all of the above.

Front

Where can nitrogen-fixing bacteria be found?

Back

In the soil and on the roots of legumes.

Front

Which type of phosphorus is found in living organisms?

Back

Organic phosphate.

Front

What do denitrifying bacteria convert nitrates and nitrites back into?

Back

Nitrogen gas (N2).

Front

What is the main role of decomposition in biogeochemical cycles?

Back

It recycles nutrients back into the ecosystem.

Front

What is the significance of nitrogen-fixing bacteria in the nitrogen cycle?

Back

They convert atmospheric nitrogen (N2) into ammonia (NH3), making it available for plants.

Front

What is organic phosphate and where is it found?

Back

Organic phosphate is a form of phosphorus found in living organisms, essential for biological processes.

Front

What are the main components of the carbon cycle?

Back

Photosynthesis, respiration, decomposition, and combustion.

Front

How do plants absorb nitrogen?

Back

Plants absorb nitrogen primarily in the form of nitrates (NO3-) and ammonium (NH4+).