a group of scientist examined a meteorite from mars and found a carbon rich substance that is produced when microorganisms decay. they concluded that the meteorite provided evidence there was once life on mars. why is this an emerging idea.

Ifound this on google “aristotle (384–322 bc) in western scientific taxonomy the greek philosopher aristotle was the first to classify all living things, and some of his groups are still used today, like the vertebrates and invertebrates, which he called animals with blood and without blood.” i hope this you for what your looking for.

The answer would be abrasion.