Env. Bio Chapter 17 HIstory of Life on Earth Vocab

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pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change

process by which unrelated organisms independently evolve similarities when adapting to similar environments

one of several subdivisions of the time between the Precambrian and the present

scientist who studies fossils

tiny bubble, formed of large organic molecules, that has some characteristics of a cell

large-scale evolutionary changes that take place over long periods of time

event in which many types of living things become extinct at the same time

process by which a single species or small group of species evolves into several different forms that live in different ways; rapid growth in the diversity of a group of organisms