The Water Cycle
The Carbon Cycle
The Nitrogen Cycle
Miscellaneous
Cycles of Nature

100

Snow, sleet, hail, and rain
What are examples of precipitation?

100

This is combustion.
What is burning a substance?

100

It is needed to build new cells.
What is nitrogen?

100

This is the only way carbon dioxide can be removed from the atmosphere.
What is photosynthesis.

100

This is the only way that nitrogen can enter back into the atmosphere.
What is bacteria (dinitrification)?

200

This occurs when water is changed from a liquid to a gas.
What is evaporation?

200

This is released during combustion, respiration, and decomposition.
What is carbon dioxide?

200

This is how living organisms return nitrogen back to the environment.
What is they die and decompose?

200

This abiotic event may cause nitrogen fixation.
What is lightning?

200

The three ways carbon is returned to the atmosphere.
What is combustion, decomposition, and respiration?

300

This slowly flows back into the soil, streams, rivers, and oceans, and it is a very important part of the water cycle.
What is ground water?

300

The breaking down of substances into simpler molecules.
What is decomposition?

300

This must occur before plants may use nitrogen to build cells.
What is nitrogen fixation?

300

The breakdown of dead materials.
What is decomposition?

300

These are two ways nitrogren fixation occurs.
What is through bacteria and lightning?

400

These are four major processes of the water cycle.
What are percipitation, transpiration, evaporation, and condensation?

400

Formed from dead plants and animals (2 words).
What is fossil fuels?

400

This is how farmers return nitrogen back to the soil.
What is they rotate crops and/or add feritlizer?

400

An element that is found in all biological molecules.
What is carbon?

400

Run-off can cause too many nutrients to enter, streams, ponds, lakes, or even the ocean. Describe the process that occurs when there are too many nutrients.
What is fast algae growth (bloom), then death of algae, then decomposition, then death of fish due to low oxygen levels?

500

Plants return water directly back through the environment.
What is transpiration?

500

This process is how plants change carbon dioxide to oxygen and other molecules.
What is photosynthesis?

500

The percentage of our environment that is made up of the element of nitrogen.
What is 78%?

500

This is used to regulate body temperature.
What is water?

500

This physics principle best describes 'nutrient cycling'
What is conservation of matter/matter can not be created, nor destroyed?