Which sentence best adds to the main idea of this paragraph?

Plants and animals living in the same physical area form an ecosystem. An ecosystem exists when plants and animals interact with each other and their environment.

Question 2 options:

Rainforests, grasslands, and coral reefs are types of ecosystems.

Animal populations are grouped by different names.

Many types of whales are in danger of becoming extinct.

Page 2 of 10

1 answer

Rainforests, grasslands, and coral reefs are types of ecosystems.
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