Bears in Yellowstone National Park have a variety of adaptat…
Bears in Yellowstone National Park have a variety of adaptations that enable them to survive in this cold, mountainous environment. Thoroughly discuss three of these animal’s adaptations to balance heat loss and gain (10 points)
Read DetailsThe lungs consist of many small air sacs and blood vessels,…
The lungs consist of many small air sacs and blood vessels, which greatly increase surface area and improve the transfer of substances through their walls. The structures in the digestive system most similar in function to these air sacs and capillaries are the _____.
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