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Question

Which of the following abiotic factor operates within an ecosystem?

A
Predation
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B
Competition
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C
Biological control
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D
Physiological control
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Solution

The correct option is C Biological control
Abiotic means non-living. The non-living factor in the choices given are temperature and helium. Helium (He) is the first of the Noble Gases. It is very non-reactive. So much so, that it doesn't form compounds with anything. Helium just floats around all by itself. So temperature is the abiotic factor that operates within an ecosystem that is responsible for the different the type of vegetation and other biotic factors of the ecosystem. All the other choices given here are biotic factors or living factors.

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