Answer: Mammals give birth to live young, whereas the birth of amphibians takes place externally. Mammals are warm-blooded, while amphibians are cold-blooded. Mammals can live in all habitats, unlike amphibians, and have muted colors. Some amphibians can regenerate their limbs.
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The Parasite harms host
The parasite must adapt to beat host's defenses <span />
The genes carried by all members of a particular population make up the populations Gene Pool.