Whales can move easily in water thanks to their .
Giải bởi Vietjack
Đáp án C
Đáp án là C. tail and skin
“Whales have tails that end like flippers. With just a gentle flick, it can propel itself forward.The skin of a whale is so smooth that it does not create any friction that can slow the whale down.
Dịch: Chiếc đuôi giống như mái chèo và bộ da mượt đã giúp cá voi bơi rất dễ dàng trong nước.
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