The study of how living and extinct organisms are related to one another is simple. This study is called evolution.
Taphonomy
By the way they look, (their bone structure, body weight) and DNA too.
All the ones not extinct.
all extinct organisms more closely related to the crown group than to any other living group. = Paraphyletic group.
what happen when some living organisms in food phyramid become extinct
Parasitology is the study of parasites, which are organisms which obtain nourishment and protection from other living organisms. Parasitology is closely related to cell biology, biochemistry, and ecology.
The genus and species of a living or an extinct organism is the category that an organism is classified in. This also gives organisms specific names used for binomial nomenclature.
Few organisms have become extinct. Few organisms are rare species.
bio- = living organisms bio-logy = study of living organisms
evolution
Living organisms depend on one another and on their environment for survival.
It is important for scientists to classify both living and extinct organisms so that historians can know how the earth was millions of years ago and today. It is more important today so that scientists can help people preserve the earth.
No, all living organisms have a slightly different to a very different DNA pattern. No living organism is alike. Not even people or animals related to another.