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20 Cards in this Set
- Front
- Back
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Nitrogen cycle |
Nitrogen fixation ---> Ammonification ---> Nitrification ---> Denitrification |
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Nitrogen fixation |
N2 cannot be used directly by living things.
Fixed in soil or watet by special nitrogen fixing bacteria that lives as a part of the roots of plants called legumes.
Such as peas or beans.
Can also be fixed by lightning.
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Ammonification |
Produced when nitrogen is fixed or animal waste or dead organisms are decomposed Accomplished by special bacteria that live in soil or water Plants are able to use ammonia and ammonium |
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Nitrification |
Nitrification is accomplished by special bacteria that live in soil and water. Nitrates arre the most usable nitrogenous compounds for plants. Plants absob nitrates from the soil and then make proteins and nucleic acids. Animals and decomposers consume the plants, the proteins are digested and nitrogen is released |
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Denitrification |
Bacteria that live in soil or water change ammonia, nitrites, or nitrates back into nitrogen gas |
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Nitrogen cycle (chemical symbol) |
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Other factors affecting ecosystems |
-greenhouse gasses -bioaccumulation -bio magnification -alien species -invasive species -biodiversity |
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Greenhouse gasses |
Gasses in the atmosphere that trap heat and cause temps to rise
Ex. CO2 and methane |
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Bioaccumulation |
Toxins enter the body at a greater rate than they are removed |
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Biomagnification |
Increases in the concentration of toxin as you move up a food chain |
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Alien species |
A species that is accidentally or deliberately introduced in a new ecosystem |
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Invasive species |
An alien species that has been introduced into a new ecosystem and then takes over this habitat |
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Biodiversity |
Variety of different plants and animals found in an ecosystem. More biodiversity increases the stabilityb of an ecosystem |
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The Water cycle involves different processes which change the state of water that move around in our enviornment. Key terms include: |
-Evaporation -Sublimation -Deposition -Condensation -Transpiration |
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Evaporation |
Liquid to Gas |
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Sublimation |
Solid to Gas |
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Deposition |
Gas to Solid |
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Condensation |
Gas To Liquid |
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Transpiration |
Liquid to Gas On the leaves of plants |
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Othet ecology terms |
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