Unit 4: Carbon Cycle Flashcard
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the carbon cycle?
Back
The carbon cycle is the process by which carbon is exchanged among the Earth's atmosphere, oceans, soil, and living organisms. It involves processes like photosynthesis, respiration, decomposition, and combustion.
2.
FLASHCARD QUESTION
Front
What is the primary sphere where humans are adding excess carbon?
Back
The atmosphere.
3.
FLASHCARD QUESTION
Front
What process releases carbon from living organisms back into the atmosphere?
Back
Respiration.
4.
FLASHCARD QUESTION
Front
What happens to carbon dioxide levels during periods of increased global temperatures?
Back
Carbon dioxide levels in the atmosphere increase.
5.
FLASHCARD QUESTION
Front
Which sphere contains over 99% of carbon in the form of carbonates?
Back
The lithosphere.
6.
FLASHCARD QUESTION
Front
What is the lithosphere?
Back
The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle, where most of the Earth's carbon is stored in the form of carbonates.
7.
FLASHCARD QUESTION
Front
What role does photosynthesis play in the carbon cycle?
Back
Photosynthesis is the process by which plants convert carbon dioxide from the atmosphere into organic compounds, thus removing carbon from the atmosphere.
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