Covers the timeline of evolution on Earth, as well as the age of Earth.
There are all sorts of ways to reconstruct the history of life on Earth.
It will show you how living things have developed and changed over the last 540
Bacteria have been the very first organisms to live on Earth. They made their appearance 3 billion years ago in the waters of the first oceans. At first, there were ...
The similarities between all present day organisms indicate the presence of a common
rare living stromatolite reefs to better understand Earth's earliest life forms.
It is estimated that the appearance of oxygenic photosynthesis by bacteria in mats
Less than a billion years ago, much more complex organisms appeared.
mammals have striking similarities in physical appearance and behaviour.
identification of the twenty amino acids used in proteins by all living organisms.