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Birds and mammals keep a constant body temperature. They are called:
ARegulators
BConformers
CMigrators
DSuspenders
Answer & Solution
Correct answer: A. Regulators
1. They hold their internal environment steady.
2. That is thermoregulation.
3. Such organisms are regulators.
_Source: NCERT Class 12 Biology, Chapter 13, Organisms and Populations._
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