Which classification level is broader than the phylum level?

Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species

Polar zones are cold and tend to be dry because of a pressure system of cold. low high