Nitrogen Cycle

Front

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

Back

bacteria

Front

How do animals get the nitrogen they need?

Back

From the food they eat

Front

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

Back

Denitrification

Front

What is a correct path that nitrogen could take? Options: air -> animals -> plants -> bacteria, animals -> air -> bacteria -> plants, bacteria -> air -> plants -> animals, air -> bacteria -> plants -> animals

Back

air -> bacteria -> plants -> animals

Front

How much of the atmosphere is composed of nitrogen gas?

Back

78%

Front

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

Back

bacteria

Front

What can transform nitrogen in the atmosphere into a usable form of nitrogen?

Back

lightning

Front

Burning fossil fuels releases this into the air: nitrous oxide, nitrate, nitrogen gas (N2), methane

Back

nitrous oxide

Front

Organisms require nitrogen to make which of the following? glucose and starch, lipids and nucleic acids, proteins and nucleic acids, carbohydrates and proteins

Back

proteins and nucleic acids

Front

What nutrients in fertilizer cause eutrophication when they run off into streams?

Back

nitrogen and phosphorus