Rough ER - protein synthesis, transport of proteins throughout the cell
Smooth ER - lipid synthesis and cell detoxification
<h3>I think it's answer (c) I hope you are satisfied with my answer </h3>
1. RNA polymerase unzips DNA
2. Free RNA nucleotides pair with complementary DNA nucleotides
3. The mRNA molecule breaks away as the DNA strands rejoin.
Hope this helps!
The more the people, the more pollutant they generate which will pollute the the water.