Biogeochemical cycles

Front

What is the largest reservoir for nitrogen?

Back

The atmosphere.

Front

What cycle are fossil fuels part of?

Back

Carbon cycle.

Front

How is carbon dioxide added to the atmosphere?

Back

By burning fossil fuels, cellular respiration, and decomposing organic matter.

Front

What converts nitrogen into a usable form for plants and animals?

Back

Bacteria.

Front

What process could move nitrogen from a golf course using fertilizer into a local stream?

Back

Runoff and leaching.

Front

What is a biogeochemical cycle?

Back

A natural process that recycles nutrients in various chemical forms from the environment to living organisms and back.

Front

Name the four main biogeochemical cycles.

Back

Carbon, nitrogen, phosphorus, and water cycles.

Front

What role do decomposers play in biogeochemical cycles?

Back

They break down dead organic matter, returning nutrients to the soil.

Front

What is nitrogen fixation?

Back

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

Front

What is the significance of the carbon cycle?

Back

It regulates the Earth's climate by controlling the levels of carbon dioxide in the atmosphere.