Environment is everything that surrounds us. The environment consists of
both living things and non-living things. It also includes natural and human-
made things.
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Sample Question
Over time, a certain species of hummingbird has developed traits including a small body, brightly colored feathers, a long, narrow beak, and the ability to drop its body temperature while it sleeps. Which of these characteristics is most likely a trait that developed in response to reach available food sources inside small knot holes in trees?