Ecosystems have a big role in the reason why different populations are able to live in the same community. Also tourist attractions, etc etc
The flat Earth<span> model is an archaic conception of the Earth's shape as a plane or disk. </span>
There are too many different fields of science for there to be just one single scientific method<span> that all scientists follow.</span>
Kuppfer's Cell, monocytes, and lymphocytes
