Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. When French biologist Jean-Baptiste Lamarck set out to categorize ...

Introduction to freshwater invertebrates / James H. Thorp and Alan P. Covich -- An overview of freshwater habitats / James H. Thorp and Alan P. Covich -- Protozoa / William D. Taylor and Robert W.

There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

Vertebrates and invertebrates have similar sets of glial cells that perform comparable functional tasks. A hallmark of all glial cells is their pronounced migratory ability. Glial cells in the PNS and ...