The cycle where plants give off oxygen and take in CO2.
Carbon Cycle
The cycle where people give off carbon dioxide and take in oxygen.
Carbon Cycle
The sun causes evaporation in this cycle
Water Cycle
Clouds are formed in this cycle.
Water Cycle
Vapor is formed in this cycle.
Water Cycle
Almost 8/10 of Earth's atmosphere is made of this gas.
nitrogen
Within this cycle plants take in nutrients that help them grow.
Nitrogen Cycle
In this cycle, lightning mixes with gases in the air then reaches earth's soil in rain.
Nitrogen Cycle
One way this cycle moves is through the food chain.
Nitrogen Cycle
In this cycle volcanoes give off CO2.
Carbon Cycle
Materials rot and decompose in this cycle releasing CO2.
Carbon Cycle
The burning of fossil fuels contributes to this cycle.
Carbon Cycle
The repeated give-and-take of oxygen and CO2 is part of this cycle.
Carbon Cycle
This cycle is caused by combustion (the burning of materials.)
Carbon Cycle