Most birds are homeothermic endotherms. a. trueb. false

True

Explanation:

Homeothermic animals are the animals which can maintain a constant body temperature and endothermic organisms are those organism which have the ability to generate their own body heat and these organisms are called warm-blooded animals.

Most birds and mammals are homeothermic endotherms because they have the ability to generate their own body heat and they can maintain their constant body temperature. This generation of own body heat requires lots of metabolic energy. Therefore the given statement is true.

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voluntary muscles are controlled by the cerebellum.