Which reason best explains why dead specimens must be used with transmission electron microscope’s _ electrons pass over the specimen _ the lights that are used are harmful to the specimens _ specimens are placed in a vacuum _ the image that is produced is two dimensional

The right answer is C

A photonic microscope is used to study cells in general (whether alive or not), form positioning and cells can be studied alive. While the electron microscope operates under vacuum so the cells are dead (the cell does not support vacuum). and the electron microscope is used to study intracellular organelles, plasma mb, etc.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds