Answer:

1. D
2. B
3. D

Explanation:

1. A species is often defined as a group of organisms that can reproduce naturally with one another and create fertile offspring.
2. Biodiversity is a term used to describe the enormous variety of life on Earth.
3. Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.

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