Answer:
The correct answer is - virus, bacteria, protist.
Explanation:
I honestly don't remember much about this and I'm sure someone else will answer more thoroughly for you but I believe it is the "<span>messenger". It carries instructions from DNA to conrol the synthesis of proteins</span>
Keratinized, <span>stratified columnar, </span>
well, there are many out comes for it. i think the most important for us would be that air pollution can shorten your life's. drastically. it also makes it hard for plants and trees to grown which can also affect us.