Biology
Answer
Cold-blooded animals — These animals cannot maintain their body temperature. Their body temperature fluctuates directly with the temperature of the environment. Animals of classes Pisces, Amphibia, Reptilia are cold-blooded animals.
Warm-blooded animals (homeothermal) — These animals maintain an almost constant, relatively high body temperature irrespective of the temperature of the environment. Animals of classes Aves and Mammalia are warm-blooded or homeothermal animals.
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