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Taxonomists use the four concepts of species to classify animals. They are the biological species concept, which identifies interbreeding organisms and their ability to produce viable fertile offspring. The second concept is grouped by structural features. Third is grouped in terms of ecological niche. The fourth is grouped by sharing of a common ancestor.

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10y ago
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5mo ago
  1. Body symmetry: Animals can be classified as asymmetrical, radial, or bilateral based on their body structures.
  2. Segmentation: Some animals have body segments that determine their classification.
  3. Presence or absence of a coelom: Animals can be grouped as acoelomates, pseudocoelomates, or coelomates based on the presence of a body cavity.
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12y ago

Whether or not it has a back bone.

How it gets its food. (Makes, consumes, obtains, absorbs)

How it is shaped

How it reproduces.

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14y ago

It can either be by kingdom, phylum, classification, origin, genus and species. Oceanic life can be determined by body temp, internal organ arrangements, and optic structures. Does this help?

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14y ago

they can move

they can't make their own food

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Q: Name three structural features that are used to classify animals?
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