4.567 million years ago
Evolution is a slow process, significant change usually takes millions of years, not thousands.
proterozoic
How did WHAT look like, please make your questions answerable.
The Earth is about 4.5 billion years old. Life appeared on Earth about 3.5 billion years ago. The Earth would have been about 1 billion years old at that time.
.02 million years ago 2.0x10-8
20000 years ago
why as it so cold in the UK 200000 years ago
Yes.
Year 17990 BC.
20000 years ago
The first "Americans" were able to migrate to the Western Hemisphere 20,000 or more years ago because North America was then connected by land to ASIA.
One possibility would be V838 Monocerotis which exploded about 20,000 years ago.
Borining
liv from 70 years agoe
300 years ago - roughly the same time as the industrial revolution escalated.
hi