Carbon cycle
Water cycle
Phosphorus cycle
Nitrogen cycle
100

The other natural source of CO2.

What is Volcanoes?

100

The type of water that is taken up through plant roots and then released into the atmosphere. 

What is groundwater? 

100

The process in which phosphorus moves between the soil and plants which are eaten by animals. The animals use the phosphorus and then their waste products help return sulfur for the next generation of phosphorus in the soil. 

What is the Phosphorus Cycle? 

100

Our atmosphere is 78% made Up of this. 

What is Nitrogen gas?

200

this is a deposit that is burned as a fossil fuel including coal and oil. 

what is natural gas? 

200

The falling of water into the atmosphere. 

What is Precipitation? 

200

This is when Too much phosphorus in water leads to this, causing the strangling of all other life forms in the water. 

What is overgrowth? 

200

This type of bacteria can directly use nitrogen in our Atmosphere and fix it so other organisms can benefit from it. 

What is nitrogen-fixing bacteria? 

300

This is dissolved and transferred throughout the entire carbon cycle. 

What is CO2 used for in the carbon cycle? 

300

The process in which after it, water condenses to form clouds. 

What is evaporation?

300

This is when some of phosphorus in soils can be washed away into this. 

What is a water basin? 

300

Animals eat plants containing nitrogen, which is returned to the soil by animal waste or decaying plants and animals. 

What is the nitrogen cycle? 

400

The process in which animals use oxygen to make more CO2.

What is respiration? 

400

This is the process by which water vapor in the air is changed into liquid water. 

What is condensation? 

400

This is another source of phosphorus in water. 

What is man-made pollution? 

400

This is bacteria in the soil that can break down ammonia into a gaseous form of nitrogen, which cannot Be used by plants and animals.

What Is denitrification? 

500

This effect happens when there is too much COin the atmosphere.

what is the Greenhouse effect?
500

This is the process in which water comes down from the clouds as precipitation than goes into the ground to create groundwater to then evaporate back up, rinse and repeat. 

What is the water cycle? 

500

It is bad for the environment and could lead to access growth. 

What is Phosphorus-rich fertilizers? 

500

This type of gas is released by denitrification, it is fixed by lightning, and is turned into fertilizer.  

What is Nitrogen gas? 

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