Well the first man on earth was Adam and then the first woman on earth was Eve. But that's only a religious theory.
Bacteria were the first living things on the planet Earth.
Earth:)
Bacteria
The first living things on earth were microbes, tiny one-celled creatures.
Dinosaurs was the first animals living on earth,but died years ago.
Many think that some bacteria may have been the first to orbit the Earth.
The Mesozoic Era.
I mean were they actually the first?
bacteria
i my opinion it was an ape
I believe rats were used first, then a solitary monkey.
it is changing all the time!!!!!!!!!!!!!!!!!!!!!!!!! ZERO live in Earth, the first answer is correct for the number living on Earth.