Vertebrate is any animal with a backbone. In this example, vertebrates are classified based on series of visible characteristics. If it has fur then it is classified as mammal else they are grouped based on feathers. If it has feathers then it is classified as bird else they are grouped based on dry skin. If it has dry skin then it is classified as Reptile else divide the group based on scales. If it has scales it is classified under fishes else classified under Amphibians.

Vertebrate is any animal with a backbone. In this example, vertebrates are classified based on series of visible characteristics. If it has fur then it is classified as mammal else they are grouped based on feathers. If it has feathers then it is classified as bird else they are grouped based on dry skin. If it has dry skin then it is classified as Reptile else divide the group based on scales. If it has scales it is classified under fishes else classified under Amphibians.

A dichotomous key is a series statements consisting of 2 choices that describe characteristics of the unidentified organism. The user has to make a choice of which of the two statements best describes the unknown organism, then based on that choice moves to the next set of statements, ultimately ending in the identity of the unknown. Here the key begins with classification based on dry skin, hair etc,

Molecular models are physical models that represent molecules and their processes. The creation of mathematical models of molecular properties and behaviors, their graphic descriptions are molecular graphics, but these topics are closely related, and each topic uses the techniques of other topics. In this article, "molecular model" will mainly refer to a system containing more than one atom and ignoring the nuclear structure. Electronic structures are also often omitted or represented in a highly complex manner. Learn more details from this diagram, or try to make yours with ease now.