Biology, 04.02.2020 14:56, juju1085

Which two characteristics do all animals have?
o they are symmetrical and heterotrophic
o they are heterotrophs and have a backbone.
o their cells have a nucleus and membrane-bound organelles.
o they have a backbone, and their cells have membrane-bound organelles.

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Which two characteristics do all animals have?
o they are symmetrical and heterotrophic
...