Whales and dolphins come up to the water surface and sometimes release

1.	Whales and dolphins come up to the water surface and sometimes release a fountain of water above their head due to______________.This question is from class 7 science chapter 10.Answer it.
Answer» Answer: The nostrils of WHALES and dolphins are located at the top of their heads called as Blowholes. So they exhale and inhale air through these blowholes. hence, their EXHALATION looks like releasing fountain of water. ... They COME upwards to TAKE in FRESH air.

Whales and dolphins come up to the water surface and sometimes release a fountain of water above their head due to______________.This question is from class 7 science chapter 10.Answer it.

Answer»

Answer:

The nostrils of WHALES and dolphins are located at the top of their heads called as Blowholes. So they exhale and inhale air through these blowholes. hence, their EXHALATION looks like releasing fountain of water. ... They COME upwards to TAKE in FRESH air.

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Whales and dolphins come up to the water surface and sometimes release a fountain of water above their head due to______________.This question is from class 7 science chapter 10.Answer it.​

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Whales and dolphins come up to the water surface and sometimes release a fountain of water above their head due to______________.This question is from class 7 science chapter 10.Answer it.