carbon cycle
phosphorus cycle
Nitrogen cycle
Water cycle
100

The process plants use carbon for to make oxygen and sugar

what is Photosynthesis 

100

phosphorus Is what makes up this chemical

what is DNA

100

Animals and plants cannot use what form of nitrogen

What is nitrogen in the atmosphere

100

A nutrient we need to survive 

What is water

200

The main regulator of CO2 in the atmosphere

What is the ocean

200

Phosphorus is found in these objects

What are rocks and minerals

200

This much our atmosphere is nitrogen 

What is 78%

200

Amount of earth covered by water

What is 71%

300

3 examples of fossil fuels

What are coal, oil, natural gas

300

To much phosphorus is water can lead to this

What is overgrowth 

300

This type of bacteria makes nitrogen usable for plants and animals

What are nitrogen fixing bacteria

300

The process of rain, snow, and other water dropping from clouds

What is precipitation 

400

A natural source of CO2

What are volcanoes

400

some phosphorus from soil goes into these

What are water basins

400

Two products rich in nitrogen

What are ammonia and nitrate

400

The process of forming clouds

what is condensation 

500

The photosynthesis equation 

What is CO2+H2O=C6 H12 O2

500

this helps bring phospHorus back into the soil

What is animal waste

500

Type of bacteria in the soil that can break down ammonia into nitrogen to go back into the atmosphere 

What are denitrification bacteria

500

Process of a puddle drying up

what is evaporation 

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