What is the Nitrogen Cycle?
The Nitrogen Cycle

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Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The Nitrogen Cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen gas, ammonia, nitrites, and nitrates, in the environment.
2.
FLASHCARD QUESTION
Front
What is nitrogen fixation?
Back
Nitrogen fixation is the process by which nitrogen gas (N2) from the atmosphere is converted into ammonia (NH3) or related compounds in soil, making it available for plants.
3.
FLASHCARD QUESTION
Front
What role do bacteria play in the Nitrogen Cycle?
Back
Bacteria are essential in the Nitrogen Cycle as they help in nitrogen fixation, nitrification, and ammonification, converting nitrogen into forms usable by plants and animals.
4.
FLASHCARD QUESTION
Front
What is ammonification?
Back
Ammonification is the process by which decomposers break down organic matter, releasing ammonium (NH4+) into the soil.
5.
FLASHCARD QUESTION
Front
What are nitrates?
Back
Nitrates (NO3-) are a form of nitrogen that plants can absorb and use for growth.
6.
FLASHCARD QUESTION
Front
How do animals obtain nitrogen?
Back
Animals obtain nitrogen by consuming plants or other animals that contain nitrogen compounds.
7.
FLASHCARD QUESTION
Front
What is denitrification?
Back
Denitrification is the process by which bacteria convert nitrates back into nitrogen gas (N2), returning it to the atmosphere.
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