Biogeochemical Cycles Review

Water Cycle

100

Rain, sleet, snow and hail are all forms of this.

Precipitation

200

The process that occurs when water changes from liquid to gas caused by heat.

Evaporation

300

The cooling of water in the atmosphere changing gas to a liquid.

Condensation

400

Rainfall that is not absorbed by soil and travels to the ocean.

Run-Off

500

The passage of water vapor from a plant to the atmosphere.

Transpiration

Carbon Cycle

100

This is Carbon's atmospheric form.

CO2 (Carbon Dioxide)

200

This is how plants receive their Carbon from the atmosphere.

Photosynthesis

300

The largest reservoir of Carbon on Earth.

Rocks

400

These are the 3 products of cellular respiration.

CO2, water, and energy (ATP)

500

These are the 2 products of photosynthesis.

Glucose (sugar) and Oxygen

Nitrogen Cycle

100

This microorganism is most necessary for the Nitrogen cycle to take place.

Bacteria

200

Nitrogen makes up this percentage of gases in the atmoshere.

78%

300

The process of bacteria changing N2 into a form that can used by plants.

Nitrogen Fixation

400

A process where bacteria changes usable nitrogen back into N2.

Denitrification

500

This step in the nitrogen cycle involves the conversion of ammonia into nitrites (NO₂⁻) and then nitrates (NO₃⁻), which plants can readily absorb.

Nitrification

Phosphorus Cycle

100

This essential nutrient is a key component of DNA, RNA, and ATP.

Phosphorus

200

This sets the phosphorus cycle apart from the other 3 biogeochemical cycles.

It does not cycle through/ exist in the atmosphere.

300

This process involves the weathering of rocks, releasing phosphate ions into the soil and water.

Weathering

400

Plants receive phosphorus through this process...

Assimilation (root absorbtion)

500

Eutrophication is caused by an increase of phosphorus and other nutrients causing a buildup of algae. This leads to what negative effects for organisms?

-Decreased Oxygen levels

-Blocked sunlight

Misc.

100

Define biotic

Living or living things

200

This cycle involves the processes of photosynthesis and respiration.

Carbon Cycle

300

This process uses sunlight to convert carbon dioxide and water into glucose and oxygen.

Photosynthesis

400

These are three different forms of nitrogen.

Ammonia, Nitrites, and Nitrates.

500

This human activity is a major contributor to the increased levels of carbon dioxide in the air.

Fossil Fuel Combustion