#6 is A. They are all composed of one or more cells.
Oil is non-renewable, the rest are renewable
Answer:
D. "always" cover the microscope when not in use.
Explanation:
when you are finished using a light microscope or any microscope in general you always need to put the cover back on it. Mostly, to protect it from any harmful bacteria, light etc. and to keep it clean and, from collecting dust.
the answer is c elm do to it having a saw blade edged