Biogeochemical Cycles Flashcard (APES)

Front

Identify the cycle pictured.

Back

The Nitrogen cycle

Front

Identify the cycle pictured.

Back

The Phosphorus cycle.

Front

Which nutrient is not cycled through the atmosphere? Options: carbon, nitrogen, phosphorous, water

Back

phosphorous

Front

This is released by the weathering of rocks.

Back

Phosphorus

Front

If the atmosphere is 78% N₂, why can't we just get our nitrogen by breathing?

Back

We have no mechanism to break the triple bond of nitrogen between the atoms.

Front

All plants have nitrogen fixing nodules on their roots.

Back

False

Front

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

Back

nitrogen fixation

Front

When bacteria convert ammonia back into nitrogen in the soil it is called ..

Back

Nitrification

Front

How much of the atmosphere is composed of nitrogen gas?

Back

78%

Front

How do  animals get nitrogen? Options: the atmosphere , eating other organisms, bacteria, lightning 

Back

eating other organisms