Biogeochemical Cycles

Front

What are biogeochemical cycles?

Back

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

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen fixation, nitrification, denitrification, and ammonification.

Front

Where are nitrogen-fixing bacteria found?

Back

Root nodules of certain plants, such as legumes.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria break down dead plants and animals, releasing nitrogen back into the atmosphere.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, precipitation, and infiltration.

Front

Which process is NOT part of the water cycle?

Back

Freezing is not a process of the water cycle.

Front

What is denitrification?

Back

Denitrification is the process by which denitrifying bacteria convert nitrates in the soil back into nitrogen gas, releasing it into the atmosphere.

Front

Where are denitrifying bacteria typically found?

Back

In the soil.

Front

What is the carbon cycle?

Back

The carbon cycle is the series of processes by which carbon compounds are interconverted in the environment, including photosynthesis, respiration, and decomposition.

Front

What is the role of producers in biogeochemical cycles?

Back

Producers, such as plants, convert inorganic substances into organic matter through photosynthesis, playing a crucial role in nutrient cycling.