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are cold-bloo...

Question

___________ are cold-blooded and their hearts have only two chambers.

A

Fishes

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B

Birds

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C

Snakes

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D

Mammals

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Solution

The correct option is A
Fishes

Fish is the first true vertebrate among all animal life. Fishes possess the vertebral column that contains the spinal cord or the nervous tissue. Fishes are cold blooded. That means they can adjust their body temperature according to the surrounding environment. Their heart has only two main chambers.

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