1001
Space
Earth
Nature
Fossils and Prehistoric Life
Dinosaurs
Simple Animals
Insects and Spiders
Fish
Amphibians
Reptiles
Birds
Sea Mammals
Land Mammals
Plant Kingdom
How Plants Live
Unusual Plants
Ecology
Conservation
Animal Behaviour
Pets and Farm Animals
History
Human World
Science and Technology
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When did evolution start?
Evolution began, over 4,000 million years ago, with the origin of molecules that could make copies of themselves. These gave rise to the first simple cells, which gave rise to the first animals.
Related Image
An illustration of evolution
 
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Book:
1001
Section:
Nature
Chapter:
Evolution