Some characteristics that scientists use to classify animals are how many cells they have, their species, genus and family and what they eat.
1st Backbones (vertebrate or invertebrate)
2nd Symmetry
Aysymmetry-organisms with no definite shape
Bilateral symmetry-organisms you can split down the middle evenly (cat,dog etc)
Radial symmetry-organisms whose parts are arranged in a circle around a center point (sea urchin)
3rd Internal and external features
Scientists classify plants and animals on the basis of tasonomy. Taxonomy is classsification, identification and nomenclature of living organisms. Taxonomy is used to classify organisms on the basis of their characteristics, mode of nutrition etc.
i recommend you use your science text book!
The five groups are Fish, Amphibians, Reptiles, Birds, Mammals
Scientists classify animals into two large groups based on wether the animal has a backbone or not. shtytrsywsysys
Luster and composition are two characteristics used to classify minerals.
The most important feature used to classify animals is Body structure!
Biotic is a term that is used by science to classify living things.
size and shape
size
you classify stars by color, temperature, size, composition, and brightness.
maritime and continental.
it tells them apart :)