The Coronary Arteries vessel directly supplies the Hear muscle with Blood.
Did you mean limestone? if so, then yes. limestone is a sedimentary rock.
Carbohydrates- cellulose cell wall in plants, chitin exoskeleton & fungal cell wall
Lipids- cell membrane (phospholipids)
Protein- Fibrous ( skin, fingernails, horns, feathers)
Necleic acid- stores genetic info(dna)
