All animal species have not yet been discovered so it is not possible to know.
Carbon is a chemical substance found in the Earth but not formed by plants or animals.
there are bout 780,000,789 animals on earth :)
In all there are about 3 million species scientists have found but scientists also estimate they have only found about 30% of all the types on Earth.
Earth!
There are trillions of animals and insects on earth. It is impossible to count them all.
there are trillion kinds of animals living on earth wich means really many many animals
The animals which are in danger of extinction and which are found in very lesser number in earth. These animals needs to be protected.
the ant
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being one of the most common elements found on the surface of Earth, I believe all animals get carbon from far too many places to list.
earth worms,catapiller
yea most plants and animals do leave behind fossils. scientists have found many of them from the pre-historic eras.