an organ system is a group of organs that work together for a common function. the order goes cells, tissues, organs, organ systems, organism.
A molecule is two or more atoms bonded together chemically. An atom is the most basic unit of matter. When atoms are chemically bonded together with covalent bonds, molecules are formed. Molecules can be very small like water molecules or extremely large like proteins such as hemoglobin.
Well hello kind human! Can you help me answer this question? please??
