Select the correct text in the passage.
Which word helps clarify the meaning of the word invertebrates?
Biological diversity is the hallmark of Great Smoky Mountains National Park, which encompasses over 800 square miles in the Southern
Appalachian Mountains. No other area of equal size in a temperate climate can match the park's amazing diversity of plants and animals, including
invertebrates. Over 17,000 species have been documented in the park, and scientists believe an additional 30,000-80,000 species may live here.
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