(d) Dolphins have nostrils positioned near the top of the head.
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Whales and dolphins are mammals and breathe air into their lungs, just like we do. ... They breathe through nostrils, called a blowhole, located right on top of their heads. This allows them to take breaths by exposing just the top of their heads to the air while they are swimming or resting under the water.
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Whales and dolphins are mammals and breathe air into their lungs, just like we do. They cannot breathe underwater like the fish can as they do not have gills. They breathe through nostrils, called a blowhole, located right on top of their heads.
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