Changes

==Basis for biological classification==

==Basis for biological classification==

The basis for the biological classification scheme is similarity of morphology (shape) and phylogeny (evolutionary history)..<ref name=ch02r2>Curtis, Helen, 1983, Biology, 4th Ed.: New York, Worth Publishing, Inc., 1159 p.</ref> In addition, the processes that led to these similarities are also used in biological classification. For example, one of the major differences between plants and animals is that animals are mobile and can search for food, whereas plants are fixed or rooted and rely on food to be brought to them<ref name=ch02r2 />

The basis for the biological classification scheme is similarity of morphology (shape) and phylogeny (evolutionary history).<ref name=ch02r2>Curtis, Helen, 1983, Biology, 4th Ed.: New York, Worth Publishing, Inc., 1159 p.</ref> In addition, the processes that led to these similarities are also used in biological classification. For example, one of the major differences between plants and animals is that animals are mobile and can search for food, whereas plants are fixed or rooted and rely on food to be brought to them<ref name=ch02r2 />

==Ranking classes of organisms==

==Ranking classes of organisms==