1. how are changes in populations related to the availability of an ecosystem's resources?
a) changes in population are independent of the availability of an ecosystem's resources.

b) population sizes are limited by the amount of resources that are available.

c) large populations need the same amount of resources as small populations.

d) as populations grow, ecosystems produce more resources in order to support the larger population.

B. Population sizes are limited by the amount of resources that are available.

B) Population sizes are limited by the amount of resources that are available.

Explanation:

Population grow when there are a lot of resources available but it can't keep growing without limit. At some point the growth is affected by changes in the available resources which are essential for the survival of the population and because of that if they are not longer available, this would limit the population size.

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