multicellular animals

A non-sexual reproductive system, without men and without sex seems like a much more efficient path.

The existence of special minerals in ancient coral reefs shows that 650 million years ago, Earth's oceans had very little oxygen, according to Australian researchers on August 17.

Chinese scientists found that the fossil fossil could help decipher the question of whether or not 600 million years ago Earth had an animal.

Sponges are present on Earth 100 million years earlier than today's animals.