Ontario Grade 9 Science Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

What is the carrying capacity?

The smallest population an area can support

The number of species in an ecosystem

The largest population that an area can support

Carrying capacity refers to the maximum number of individuals of a species that can be sustained in a given environment without damaging the long-term viability of that environment. This means that A and D are incorrect because carrying capacity is not the smallest or average population an area can support, but rather the largest. B is incorrect because carrying capacity applies to a specific species, not the number of species in an ecosystem as a whole.

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The average size of a population in an ecosystem

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