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Which of the following statements is true?
The main factors determining biome conditions are wind and soil type.
A niche is the role an organism has in an ecosystem.
The number of organisms in an ecosystem is an abiotic factor.
Biomes generally follow man-made boundaries, like country borders.

Answer :

sandylunaa
The answer would be "A niche is the role an organism has in an ecosystem." Because a niche is the position or 'job' an organism has in an ecosystem. For example, the niche of certain butterflies and bees is to pollinate flowers in an ecosystem which allows them to reproduce.

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