Place in the correct order

If you see a sedimentary outcrop and red layers of sand are at the top of pale layers of rock, what does this tell you about the ages of the rock layers?

Mattias scheiden and theodor schwann studied plant and aniaml cells under a microscope. together these men concluded that plants and aniamals are made up of cells, which scientist furthered their study to complete our mordern cell theory

Which glial cells form myelin in the central nervous system?