<span>C is the correct answer. Electron microscopes require a vacuum to work, so living cells cannot be seen because they cannot respire. Light microscopes use a ray of visible light instead of a beam of electrons to magnify something so it can be seen by the naked eye. There are two different types of electron microscope: transmission (TEM) and scanning (SEM).</span>
Answer:
'A' is the the point on the graph that shows a temperature of 40°C and the time of 25 minutes
It gets warmer because the forming ice gives heat up
