What type of microscope would be best for studying the detailed structure of the surface of a plasma membrane?

Most of the carbon on earth is stored in the form of

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred

Light sensitivity in euglena is provided by the