Birds and other animals maintain the health of an ecosystem. And, when species become endangered, it's a sign that an ecosystem is out of balance. Well, ecosystems are groups of plants and animals that are found in the same area and interact with each other.
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Answer:
Birds and other animals maintain the health of an ecosystem. And, when species become endangered, it's a sign that an ecosystem is out of balance. Well, ecosystems are groups of plants and animals that are found in the same area and interact with each other.