Nitrogen Cycle
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the nitrogen cycle?
Back
The nitrogen cycle is the process through which nitrogen is converted between its various chemical forms, circulating through the atmosphere, soil, and living organisms.
2.
FLASHCARD QUESTION
Front
What is ammonification?
Back
Ammonification is the conversion of organic nitrogen from dead organisms and waste into ammonia by decomposers.
3.
FLASHCARD QUESTION
Front
What is nitrification?
Back
Nitrification is the process by which ammonia is converted into nitrites and then into nitrates by bacteria in the soil.
4.
FLASHCARD QUESTION
Front
What is denitrification?
Back
Denitrification is the process by which nitrates are converted back into nitrogen gas, returning nitrogen to the atmosphere.
5.
FLASHCARD QUESTION
Front
What role do plants play in the nitrogen cycle?
Back
Plants absorb nitrates from the soil and use them to synthesize proteins and nucleic acids, which are essential for growth.
6.
FLASHCARD QUESTION
Front
What is nitrogen fixation?
Back
Nitrogen fixation is the process of converting atmospheric nitrogen gas into ammonia, which can be used by plants, often facilitated by certain bacteria.
7.
FLASHCARD QUESTION
Front
What is an algae bloom?
Back
An algae bloom is a rapid increase in the population of algae in water bodies, often caused by excess nutrients like nitrogen.
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