Biogeochemical Cycles
Flashcard
•
Science
•
9th Grade
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What are biogeochemical cycles?
Back
Biogeochemical cycles are natural processes that recycle nutrients in various chemical forms from the environment to organisms and then back to the environment.
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
2.
FLASHCARD QUESTION
Front
What is the significance of biogeochemical cycles?
Back
They ensure the availability of essential nutrients for organisms and help maintain ecosystem balance.
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
3.
FLASHCARD QUESTION
Front
What is denitrification?
Back
Denitrification is the process by which bacteria convert nitrates (NO3-) into nitrogen gas (N2), returning it to the atmosphere.
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-3
4.
FLASHCARD QUESTION
Front
What role do bacteria play in the nitrogen cycle?
Back
Bacteria are essential for various processes in the nitrogen cycle, including nitrogen fixation, nitrification, and denitrification.
5.
FLASHCARD QUESTION
Front
What is nitrogen fixation?
Back
Nitrogen fixation is the process of converting nitrogen gas (N2) from the atmosphere into ammonia (NH4+), which plants can use.
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-3
NGSS.MS-LS2-4
6.
FLASHCARD QUESTION
Front
What is ammonification?
Back
Ammonification is the process by which decomposers convert organic matter from dead organisms and waste into ammonium (NH4+).
Tags
NGSS.MS-LS2-3
NGSS.MS-LS2-4
7.
FLASHCARD QUESTION
Front
What is nitrification?
Back
Nitrification is the process by which ammonium (NH4+) is converted into nitrites (NO2-) and then into nitrates (NO3-) by bacteria.
Tags
NGSS.MS-LS2-3
NGSS.MS-LS2-4
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