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Photosynthesis

The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food.

Heterotrophs

organisms that depend on other organisms for food.

Mutations

An abrupt and marked change in the DNA of an organism compared to that of its parents.

Theory

A hypothesis that has been tested with a significant amount of data

Prokaryotic Cell

A cell that has no distinct, membrane-bound organelles

Species

A unit of one or more populations of individuals that can reproduce under normal conditions, produce fertile offspring, and are reproductively isolated from other such units.

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