Water Cycle
Carbon Cycle
Nitrogen Cycle
Human Impacts
Energy Flow
100

water returning to the ground from the atmosphere

Precipitation

100

The process when animals breath in oxygen and breath out CO2

Respiration

100

The most abundant gas in the atmosphere

nitrogen gas (N2) 

100

coal, oil, and natural gas are examples of this

Fossil fuels

100

Where all the energy for an ecosystem comes from

The Sun

200

Process which liquid water becomes water vapor and returning to the atmosphere

Evaporation

200

The removal of CO2 from the atmosphere by plants

Photosynthesis

200

The conversion of N2 by bacteria into nitrates used by plants and other organisms.

Nitrogen Fixation

200

Burning fossil fuels increases this greenhouse gas in the atmosphere

CO2

200

The organisms that make their own food directly using the energy from the Sun

Producers (plants)

300

When water vapor becomes a liquid creating clouds in the atmosphere 

Condensation

300

When carbon is consumed by an animal from a plant or other organism.

Feeding

300

What nitrates are used for by plants and other organisms

DNA, RNA, proteins

300

The increase in CO2, and other greenhouse gases, over time causes this process to speed up

Global Warming
300

The consumer that eats only plants

herbivore (primary consumer)

400

When water evaporates from Trees to return to the atmosphere

Transpiration

400
When dead organisms are consumed and carbon is returned to the soil or atmosphere.

Decomposition

400

The process that changes nitrates into N2 (nitrogen gas) by bacteria

Denitrification

400

The problem created in waterways from runoff when too many nitrates are put into the soil for farming.

Eutrophication

400

The consumer that eats only other animals

Carnivore (predator)
500

The collection basin "sink" of water from runoff or precipitation in oceans, lakes, and streams

Reservoir

500

The process of burning fossil fuels returning CO2 to the atmosphere.

Combustion

500

When bacteria in the roots of plants take up nitrates from the soil

Assimilation

500

Oceans capture CO2 from the atmosphere. When too much CO2 is trapped in the oceans it goes through a chemical reaction that changes the pH and is known as this

Ocean Acidification

500

The consumer that eats mostly dead organic matter

Detritivore