overview of nitrogen & phosphorus cycle
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| process by which nitrogen is returned to the atmosphere from the soil by bacteria | denitrifiation
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| rock cycle or sedimentary biogeochemical cycle | phosphorus
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| breakdown organic matter to release nitrogen or other elements for use by plants & animals | decomposers
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| found in teeth and bones of animals and in ocean sediments & rocks | phosphorus
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| where nitrogen fixing bacteria are found | in the root nodules of legumes
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| What does the atomic number represent? | the number of protons
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| process by which bacteria take nitrogen from the air and convert it into a form useable by plants | nitrogen fixation
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| in addition to the bacteria in soil and in the roots of legumes, this occurence can fix nitrogen in the atmosphere | lightning
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| bacteria, legumes and decomposers all have a direct role in this cycle | nitrogen
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| the atmosphere is what percent nitrogen | 78
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| What is a major reservoir of nitrogen | the atmosphere
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| excessive use of fertilizers can cause this in our waterways | algal blooms
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| What are the consequences of an algal bloom? | lots of algae, little or no oxygen, fish kills
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| When algal blooms occur in our waterways, we know this process is underway | eutrophication
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| nutrient pollution (nitrogen & Phosphorus) | eutrophication
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| anything introduced into an ecosystem that causes harm to organisms | pollution
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| example of pollution we have studied recently | eutrophication by excess fertilizer use
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Created by:
mrstolan
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