7
QuizMultiple Choice

Energy Flow in Ecosystems

Question 7 • Science 7 B (M12 25/26 S2)

Rosa has a vegetable garden. She places earthworms, which are decomposers, in the garden soil.What is Rosa most likely trying to do?

Answer
A
prevent insects from eating the plants
B
create usable food energy for the plants
C
enrich the soil with nutrients
D
kill the bacteria in the soil

Explanation

Earthworms are decomposers: they break down dead plant material and other organic matter in the soil. This releases nutrients that plants can absorb, so Rosa is most likely trying to enrich the soil with nutrients. Earthworms do not create food energy for plants or kill soil bacteria.

AI-written and checked against the verified answer.

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