Open Sci Ed - Ecosystems Units 1 & 2
Flashcard
•
Biology
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is permafrost?
Back
Ground that stays frozen for years.
2.
FLASHCARD QUESTION
Front
What happens when permafrost thaws?
Back
Peat is exposed and able to decompose and burn.
3.
FLASHCARD QUESTION
Front
What causes competition for food in ecosystems?
Back
A large population of a species, such as wildebeest.
4.
FLASHCARD QUESTION
Front
How is energy and matter returned to the atmosphere from plants?
Back
Through decomposers.
5.
FLASHCARD QUESTION
Front
What is a carbon sink?
Back
A carbon sink is created when decomposition rates are slowed by cold and low oxygen levels.
6.
FLASHCARD QUESTION
Front
What role do decomposers play in an ecosystem?
Back
Decomposers break down dead organic matter, returning nutrients to the soil and releasing energy back into the atmosphere.
7.
FLASHCARD QUESTION
Front
What is the significance of peat in ecosystems?
Back
Peat stores carbon and can release it when it decomposes, impacting climate change.
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