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Science · 2022 · 3 marks
CBSE 2022 · Region 3 · Set 1 · Q8
What are human-made ecosystems? Give an example. Can a human-made ecosystem become a self-sustaining ecosystem? Give reason to justify your answer.
What are human-made ecosystems? Give an example. Can a human-made ecosystem become a self-sustaining ecosystem? Give reason to justify your answer.
Marking-scheme solution
Human made ecosystems are artificial ecosystems that are developed by human beings. Example: an aquarium, crop fields, parks
No, they cannot become self-sustaining ecosystem.
It needs to be cleaned regularly as natural replenishment by decomposers /bacteria (cleansing agents) is not possible.
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