chemical evolution

1. The formation of complex organic molecules (see also organic molecule ) from simpler inorganic molecules through chemical reactions in the oceans during the early history of the Earth ; the first step in the development of life on this planet . The period of chemical evolution lasted less than a billion years.

Notes

Some scientists believe that all or most of the Earth's original organic molecules were created in space and were brought to the Earth's oceans by meteorites .

Many of the steps in chemical evolution can now be reproduced in the laboratory.

Example Sentences

It has been a favourite thought with some that the origin of the first living thing was the result of chemical evolution.

From Project Gutenberg

We must first notice that no notion of chemical evolution helps us out.

From Project Gutenberg