Front

Why do living things need nitrogen?

Back

To make proteins AND amino acids.

Front

What cycle are fossil fuels part of?

Back

Carbon cycle.

Front

What is the largest reservoir for nitrogen?

Back

The atmosphere.

Front

What is the only process that removes carbon from the atmosphere?

Back

Photosynthesis.

Front

The process of plants losing water through their leaves is called ____.

Back

Transpiration.

Front

What is a biogeochemical cycle?

Back

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

Front

Name the four main biogeochemical cycles.

Back

Carbon, nitrogen, phosphorus, and water cycles.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert nitrogen gas from the atmosphere into forms usable by plants (nitrogen fixation) and decompose organic matter to release nitrogen back into the soil.

Front

What is photosynthesis?

Back

The process by which green plants use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What is the significance of the carbon cycle?

Back

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