An ocean, a forest, and a grassy meadow are each examples of a complete ecosystem. Complete ecosystems contain only
animals. rocks and water. living and nonliving things. populations of plants and animals.
Question: An ocean, a forest, and a grassy meadow are each examples of a complete ecosystem. Complete ecosystems contain only
A. animals.
B. rocks and water.
C. living and nonliving things.
D. populations of plants and animals.
Answer: