Which of the following statements is true? a. biodiversity provides additional resources that raise the carrying capacity of an ecosystem. b. biodiversity increases an ecosystem's ability to withstand changes. c. biodiversity makes an ecosystem more difficult to destroy. d. biodiversity provides additional sources of food for the weakest organisms in an ecosystem. i figured out that the answer is b.

which of the following determines the carrying capacity of a particular population by an ecosystem? a. keystone species b. pioneer species c. limiting factors d. renewable resources.

which of the following is a form of pollution triggered by formation of a gas, and can have dramatic effects on the health of the coral reef ecosystem? a. fog b. pesticides c. acid rain d. oil spill