Answer:
“Nano” is the metric prefix for 1 x 10-9, so a nanometer (nm) is a billionth of a meter. It comes from an ancient Greek word that means “dwarf.” Nanoparticles range from 1 to 100 nm in diameter.
Explanation:
Im guessing it gives them an advantage of there essay like if u were to say dogs suck u could have a counter claim but idk if thats right sorry :(
