What is the difference between a) prokaryote and eukaryote; b) autotroph and heterotroph; c) unicellular and multicellular?

Explanation:

a) eukaryotes have membrane bound organelles like nuclei while prokaryotes don't

b) autotrophs = producers that can make their own food while heterotrophs consume producers or other consumers

c) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function

the scientific method.