Unit 1: Biogeochemical Cycles Review

Front

What is the process by which carbon is absorbed by plants from the atmosphere?

Back

Photosynthesis.

Front

What is the process called when nitrogen is converted from the atmosphere into a form usable by plants?

Back

Nitrogen fixation.

Front

What is the term for the movement of water, nutrients, and pollutants from land to water bodies?

Back

Runoff.

Front

What is the biological process that converts ammonia into nitrites and nitrates?

Back

Nitrification.

Front

What happens to oxygen levels in water during an algal bloom if balance is not restored?

Back

The concentration of oxygen drops below the necessary level.

Front

What is the process by which dead organic matter is broken down by decomposers?

Back

Decomposition.

Front

What role do bacteria play in the nitrogen cycle?

Back

They convert nitrogen gas into a usable form for plants and animals.

Front

What is the term for the release of nitrogen gas back into the atmosphere?

Back

Denitrification.

Front

What is transpiration in the context of the water cycle?

Back

The process by which water is absorbed by plants and released as vapor into the atmosphere.

Front

What is ammonification?

Back

The process of converting organic nitrogen into ammonia.