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Which one of the following is not a natural ecosystem ?
What are decomposers ? List two consequences of their absence in an ecosystem.
What are human-made ecosystems ? Give an example. Can a human-made ecosystem become a self-sustaining ecosystem ? Give reason to justify your answer.
Why does a kitchen garden called an artificial ecosystem while a forest is considered to be a natural ecosystem?
While designing an artificial ecosystem at home, write any two things to be kept in mind to convert it into a self-sustaining system. Give reason to justify your answer.
Construct a food chain of four trophic levels comprising the following: Hawk, snake, plants, rat.
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