Taxonomy: Life's Filing System - Crash Course Biology #19
Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy. Crash Course Biology is now ...
========== Taxonomy! It's the science
of classifying living things. That sounds exciting. Today we'll basically be learning
the Dewey Decimel System of evolution! It's like filing! You must be on the
edge of your seat. OK, shut up. When it comes down to it,
this science doesn't just categorize organisms, when you look a little deeper,
you realize it's telling the story of all life on earth. And it's a pretty good story. Every living thing on this planet
is related to every other living thing. If you go far enough back,
we all have a common ancestor. An organism that both you
and I are descended from. Or something that a star fish and
a blue whale are descended from. Or, even weirder, that an
oak tree and a salmon are both descended from. That organism lived. It l...