Ecosystem Services Include Processes That Increase the Quality of the Abiotic

question 20

Multiple Choice

Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?

• A) Keystone predators have a marked effect on species diversity.
• B) Green plants and phytoplankton produce the oxygen we breathe.
• C) Bees, flies, and wasps pollinate many plants.
• D) The presence of dams improves flood control.

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