Biogeochemical Cycles

24 terms by tskillingstad

Create a new folder

Like this study set?

Create a free Quizlet account to save it and study later.

Sign up for an account

Already have a Quizlet account? .

Create an account

Advertisement Upgrade to remove ads



pure chemical substance made up of same atoms


variety of organisms in an ecosystem. Indicator of the health of an ecosystem.


nonliving, physical features of the environment, including air, water, sunlight, soil, temperature, and climate

fossil fuels

coal, oil, natural gas, and other fuels that are ancient remains of plants and animals. Hydrocarbon


the ability to dissolve in another substance


process by which plants use the sun's energy to convert water and carbon dioxide into sugars

calcium carbonate

CaCO3 - shells, limestone

carbon cycle

biogeochemical cycle that describes transformation of these compounds in nature CaCO3, CO2, HCO3−, CH4, R-CH3

nitrogen cycle

biogeochemical cycle that describes the transformation of these compounds in nature N2, NH4+, NH3, NO2-, NO3, R-NH2


measure of the concentration of H+, power of Hydrogen

chemical formula

notation that shows what elements a compound contains and the ratio of atoms or ions in the compound

biogeochemical cycle

A pathway by which a chemical elements moves through both living and non-living components of an ecosystem


O2, diatomic molecule which composes 21% of dry air

carbon dioxide

CO2, colorless, odorless gas, produced by burning carbon and organic compounds and by respiration and absorbed by plants in photosynthesis.

bicarbonate ion

HCO3-, decreases pH of environment


CH4, odorless flammable gas that is the main constituent of natural gas


CH2O, common names sugar and starches. Form of chemical energy for cells, broken down into glucose

atmospheric nitrogen

N2, diatomic molecule which composes 78% of dry air


NH3, A colorless gas with a characteristic pungent smell. It dissolves in water to form a strong base solution.


NO3-, compound used by plants for nutrients


R-NH2, large biomolecue made of amino acids and used as structural material for cells


process of burning, producing heat and light


building living tissue

nitrogen fixation

process which bacteria convert atmospheric nitrogen to usable forms for plants

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set