They ensure they leave the system and they also ensure that people get the nutrients they need.
Answer:
I think the electron microscope can magnify objects up to 200,000 times.
Explanation:
<span>In eukaryotic cells, the genetic structure consists of DNA and a tightly wound protein, which together form a substance called chromatin. Chromatin is a </span><span>complex of macromolecules found in cells, consisting of DNA, protein and RNA</span>