Invertebrates is the term for multicellular organisms that lack a backbone.
Aristotle
Biotic is a term that is used by science to classify living things.
Scientists classify living things because then it's easier to share information, study, & discuss these living things.
Np
Binomial nomenclature.
a vertebrate is a living organism with a backbone and an invertebrate is a living organism without a backbone
ugly
micro organisms
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To be able to study all the living things in our universe, we need a way to group or classify them together. Scientists divided all things into living and non-living. Then they divided those (e.g. animal kindom and plant kingdom, then continued dividing them on how the items were seimilar or dissimilar).
Taxonomy
According to their common traits.The main division is into the 2 categories: vertebrates (with backbone) and invertebrates (without backbone).Vertebrates can be sub-divided into 5 groups: Fish, Reptiles, Amphibians, Birds and Mammals.Livings things are classified into:DomainKingdomPhylumClassOrderFamilyGenusSpecies