Biogeochemical Cycles

Front

What is the main purpose of nitrogen for living organisms?

Back

To make proteins and amino acids.

Front

Which process is NOT part of the water cycle?

Back

Freezing.

Front

Where can carbon be found stored in the environment?

Back

In fossil fuels, wood of trees, and calcium carbonate (shells and bones).

Front

Which process does NOT add nitrogen compounds to the soil?

Back

Denitrification.

Front

What are the swellings on the roots of legumes called?

Back

Nodules.

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

What role do decomposers play in biogeochemical cycles?

Back

They break down dead organisms, returning nutrients to the soil.

Front

What is nitrogen fixation?

Back

The process of converting atmospheric nitrogen into a form usable by plants.

Front

What is the significance of the water cycle?

Back

It regulates climate, supports plant growth, and replenishes freshwater resources.

Front

What is the carbon cycle?

Back

The process by which carbon is exchanged among the atmosphere, land, water, and living organisms.