The Water Cycle
The Carbon Cycle
The Nitrogen Cycle
100

The droplets on the outside of your cold glass.

What is condensation? 

100

Energy absorbed by plants from the sun. 

What is sunlight?

100

Any sort of water falling from clouds.

What is precipitation? 

200

When plants absorb water then release the vapor into the atmosphere.

What is transpiration? 

200

When a plant uses sunlight to make sugars.

What is photosynthesis? 

200

Gas that makes up about 78% of the air. 

What is Nitrogen gas?

300

Water from rain and snow melt that doesn't soak into the ground.

What is run-off?

300

A clear odorless gas that humans cannot breathe. 

What is CO2?

300

Leftover remains of food, animals, and plants that can decompose naturally.

What is Organic waste?

400

When water turns to gas. 

What is evaporation? 

400

Air pollutants being released into air, including CO2.

What is auto & factory emissions?

400

 bacteria and archaea turn ammonia into nitrite and then into nitrate

What is nitrification?

500

When plants absorb nutrients and water through their roots.

What is planet uptake?

500

When living things break down dead plants and animals. 

What is organism decay?

500

Bacteria in soil and water turns nitrates into nitrogen gas, then releases it into the atmosphere. 

What is denitrification?