chemical evolution

Cultural  

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.

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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

"Now we can look for more analogs in the Milky Way, that are much brighter, and study their chemical evolution without having to chase these extremely faint stars," Frebel says.

From Science Daily • May 14, 2024

Are we a fortunate and exceedingly rare outcome of chemical evolution, or is organic biochemistry a regular part of the chemical evolution of the cosmos?

From Textbooks • Oct. 13, 2016

She specializes in the early universe, the beginning of the chemical evolution, and the formation of the first stars and galaxies.

From Slate • Feb. 16, 2014

But astronomers have since established what she called “a framework for the chemical evolution of the universe.”

From New York Times • Feb. 10, 2014

The chemical evolution of the globe has undergone great changes as the temperature gradually fell and the constitution of its crust altered.

From The Mechanism of Life by Leduc, Stéphane