When an animal eats, food stays in the stomach for a period of time. When a unicellular organism, such as Paramecium, takes in food, the food is contained in which organelle? Amino acids link together by peptide bonds to form proteins.
Manure contaminates food during its production. Chemicals found in it get absorbed by produce and in turn when you eat it it enters your body and can cause harm and poison you. On the other hand, hair falls in during meal preparations. A hair falls in and can spread bacteria or illnesses to you or anything similar.
Only eukaryotic cells contain membrane bound organelles (such as a nucleus). Prokaryotic cells do not. Therefore, the answer is A.
Greater ability to recover after natural disasters and greater variety of food sources.