Biogeochemical Cycles

Front

What is the main process involved in the fast carbon cycle?

Back

Photosynthesis and respiration.

Front

What is denitrification in the nitrogen cycle?

Back

Denitrification is the conversion of nitrates into nitrogen gas by denitrifying bacteria.

Front

Which organisms are responsible for nitrogen fixation in the nitrogen cycle?

Back

Bacteria.

Front

What is the primary source of phosphorus in the phosphorus cycle?

Back

Rocks and minerals.

Front

What are the main reservoirs of carbon in the carbon cycle?

Back

Oceans, sediments, and fossil fuels.

Front

Define 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 role do decomposers play in biogeochemical cycles?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for uptake by plants.

Front

Explain the significance of the water cycle in ecosystems.

Back

The water cycle is crucial for maintaining ecosystem health, supporting plant growth, and regulating climate.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into a form usable by living organisms, primarily ammonia (NH3).

Front

How do human activities impact the carbon cycle?

Back

Human activities, such as burning fossil fuels and deforestation, increase carbon dioxide levels in the atmosphere, contributing to climate change.