Nitrogen Cycle
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?
Back
Nitrogen fixation is the process of converting nitrogen gas (N2) from the atmosphere into ammonia (NH3) or related compounds in soil, making it available for plants.
2.
FLASHCARD QUESTION
Front
What is the formula for atmospheric nitrogen?
Back
The formula for atmospheric nitrogen is N2.
3.
FLASHCARD QUESTION
Front
Gas that makes up 78% of our atmosphere.
Back
Nitrogen makes up approximately 78% of the Earth's atmosphere.
4.
FLASHCARD QUESTION
Front
What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?
Back
Denitrification is the process where nitrogen compounds are converted back into nitrogen gas (N2) and released into the atmosphere.
5.
FLASHCARD QUESTION
Front
Do all plants have nitrogen-fixing bacteria in their roots?
Back
False. Not all plants have nitrogen-fixing bacteria; only certain plants, like legumes, have symbiotic relationships with these bacteria.
6.
FLASHCARD QUESTION
Front
What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
Back
Nitrogen-fixing bacteria convert atmospheric nitrogen (N2) into ammonia (NH3), which can be used by plants.
7.
FLASHCARD QUESTION
Front
What is ammonification in the nitrogen cycle?
Back
Ammonification is the process by which organic nitrogen from dead organisms is converted into ammonia (NH3) by decomposers.
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