Nitrogen Cycle Flashcard

Front

What are the two forms of nitrogen plants and animals can use?

Back

Ammonia and Nitrates

Front

What are the five steps of the nitrogen cycle?

Back

Denitrification, Assimilation, Nitrification, Ammonification, Nitrogen Fixation

Front

During Nitrogen Fixation, what helps transform nitrogen gas into ammonia that can be absorbed by the plants? Options: Insects, Roots, Bacteria, Soil

Back

Bacteria

Front

What do decomposers transform nitrogen-containing parts of the organic matter into? Options: Ammonia, Nitrates, Nitrogen Gas, Soil

Back

Ammonia

Front

During Nitrification why do bacteria transform ammonia into nitrates?

Back

So the plants can absorb them.

Front

How do animals get nitrates?

Back

By eating the plants.

Front

Denitrification

Back

When bacteria convert nitrates in the soil to nitrogen gas and it's released into the atmosphere.

Front

What are two ways humans negatively affect the nitrogen cycle?

Back

By over using fertilizers and burning fossil fuels.

Front

What percent of nitrogen makes up our atmosphere?

Back

78%

Front

Nitrogen is absorbed by the plants in the form of: Ammonium, Nitrites, Nitrates, All

Back

All