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What are the 4 characteristics that define an animal?

Sagot :

Animals have multiple cells, according to Audesirk & Audesirk's list of features. Animals are heterotrophic, meaning they get their energy from eating food that releases energy. Animals normally have sexual reproduction. Animals are composed of cells without cell walls.

The vast majority of animals have specialised tissues, and all animals are eukaryotic, multicellular organisms. The majority of animals are mobile, at least at some points in their lives. Animals need nourishment in order to thrive and grow. Every animal is heterotrophic, meaning they consume both live and dead organic stuff.

Mammals, birds, fish, amphibians, and reptiles are among them.

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