Answer:
transports oxygen and carbon dioxide for the respiratory system.
Sorry but i only know 1.... its blood cells
Answer:
All amino acids share a general structure composed of four groups of molecules: a central alpha-carbon with a hydrogen atom, an amine group, a carboxyl group, and a side chain.
Ferns, club mosses, horsetails, and which ferns are seedless vascular plants that reproduce with spores and are found in moist environments.
