Incomplete question you must include the choices.
nervous system is the communication system of the body.
I think it’s C because if you’re allergic to one cillian than you’re allergic to all of them
Sorry if this is wrong
Answer:
Carbohydrates
Explanation:
Carbohydrates are made up of carbon, hydrogen, and oxygen make up carbohydrates. These biomolecules are the primary sources of energy of living things, including humans. They are found in living organisms in the form of sugars, fibers, and starches. There are different types of carbohydrates like monosaccharides, disaccharades, and polysaccharide.
