Answer:
Animals are made up of eukaryotic cells, meaning they have a nucleus which contains the DNA. :)
It would be convection because it isnt having any physical collision which rules out conduction and it is going through mid air which rules out evaporation and radiation
Cholesterol is a waxy substance found in blood.
Answer:
This means that some cells are able to letter molecules pass through them and this makes it easier for the molecules to pass through.
