What is the role of nitrogen fixation in the ecosystem?
Bio EOC Review: Ecology

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Biology
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10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into a form usable by plants and animals, as atmospheric nitrogen is not directly usable by them.
2.
FLASHCARD QUESTION
Front
What are primary consumers in an ecosystem?
Back
Primary consumers are organisms that eat producers (plants) to obtain energy. They are typically herbivores.
3.
FLASHCARD QUESTION
Front
What is competition in ecological terms?
Back
Competition occurs when two or more organisms vie for the same resources (such as food, space, or mates) in an ecosystem.
4.
FLASHCARD QUESTION
Front
What is the nitrogen cycle?
Back
The nitrogen cycle is the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms.
5.
FLASHCARD QUESTION
Front
How do animals obtain nitrogen?
Back
Animals obtain nitrogen primarily by consuming plants or other animals that contain nitrogen compounds.
6.
FLASHCARD QUESTION
Front
What is the difference between a food web and a food chain?
Back
A food web is a complex network of feeding relationships among various organisms in an ecosystem, while a food chain is a linear sequence showing how energy and nutrients flow from one organism to another.
7.
FLASHCARD QUESTION
Front
What is denitrification?
Back
Denitrification is the process by which bacteria convert nitrates in the soil back into nitrogen gas (N2), returning it to the atmosphere.
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