Carbon and Nitrogen Cycles
Flashcard
•
Science
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Nitrogen Fixation?
Back
The process of converting nitrogen gas (N2) from the atmosphere into a form that plants and animals can use, primarily through the action of certain bacteria.
2.
FLASHCARD QUESTION
Front
How do animals obtain nitrogen?
Back
Animals obtain nitrogen by eating other organisms, which contain nitrogen in their proteins.
3.
FLASHCARD QUESTION
Front
What processes add carbon dioxide to the atmosphere?
Back
Volcanic eruptions, combustion of fossil fuels, and respiration by animals and plants all contribute to increasing carbon dioxide levels in the atmosphere.
4.
FLASHCARD QUESTION
Front
What is the role of decomposers in an ecosystem?
Back
Decomposers recycle matter and nutrients back into the ecosystem, breaking down dead organic material and returning essential nutrients to the soil.
5.
FLASHCARD QUESTION
Front
Which organisms require nitrogen to survive?
Back
All living organisms, including plants, animals, and bacteria, require nitrogen for growth and development.
6.
FLASHCARD QUESTION
Front
What is the carbon cycle?
Back
The carbon cycle is the process by which carbon is exchanged between the atmosphere, land, water, and living organisms, involving processes like photosynthesis and respiration.
7.
FLASHCARD QUESTION
Front
What is the significance of photosynthesis in the carbon cycle?
Back
Photosynthesis allows plants to absorb carbon dioxide from the atmosphere and convert it into organic matter, which is essential for the growth of plants and the food chain.
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