Examlex
Carbohydrates are structurally defined as polyhydroxyaldehydes and polyhydroxyketones,or compounds that can be hydrolyzed to them.
Cambrian Period
A geological era around 541 million years ago, marked by a rapid diversification of life forms and the appearance of most major groups of animals in the fossil record.
Great Chain of Being
A hierarchical structure of all matter and life, believed in medieval Christianity to have been decreed by God.
No Apparent Function
Describes aspects of organisms that do not show a clear purpose or role.
Fossil Records
The total number of fossils discovered and the information they provide about past life forms on Earth.
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