O2
CO2
H2O
N2
Ph
100

This process stores energy and adds Oxygen to the atmosphere.

What is Photosynthesis?

100

The liquid form of stored carbon.

What is oil?

100

Fresh water stored over long periods of time in solid form.

What are glaciers?

100

Plants and Animals cannot use this from the atmosphere.

What is N2?

100

Where the phosphorous cycle begins.

What are rocks?

200

This biological process removes O2 from the atmosphere.

What is breathing?

200

An early form of coal.

What is peat?

200

The process that moves H2O into the atmosphere.

What is evaporation?

200

This simple life form is important in converting N2 into NH4.

What are Bacteria

200

The process that removes Ph from the rocks and brings it into the hydrosphere.

What is weathering?

300

2 spheres that are involved in the oxygen cycle.

Biosphere and Atmosphere.

300

A common molecule that contains carbon.

What is CO2?

300

Water is made up of one Oxygen and this.

What is hydrogen?

300

A word for Nh4

What is Ammonia?

300

The name for the P04 which can be used by plants.

What is phosphate

400

This cycle removes oxygen from the atmosphere and puts it into the hydrosphere in the form of H2O.

What is the water cycle?

400

A geological process that releases carbon dioxide into the atmosphere. 

What is a volcanic eruption?

400

During this biological process water is a product?

What is breathing?

400

The name of the molecule with nitrogen that many plants can use? (NO3)

What are Nitrates?

400

Which process can brings exposed phosphates into streams and rivers and eventually the ocean?

What is runoff in streams and rivers?

500

What element can lead to low O2 levels in the Hydrosphere?

What is phosphorous?

500

This happens to carbon when an animal or plant dies and returns carbon to the geosphere.

What is decomposition. 

500

H2O is involved in which other cycles?

What are all of the cycles (o2, co2,P and N)? 

500

An environment where can bacteria take NO3 and convert it into N2 again has to be low in _________.

What is O2? 

500

__________ is sigificantly different when it comes to the phosphorous cycle from other cycles?

What is time?