Many cells working together forms a tissue. Many tissues working together forms organs. Many organs working together forms organ systems. So it goes from general to most specific. Organ systems are needed in order for life. This proves that cells are the most basic units of life.
The antigens that are on the blood A antigens, B antigens and the Rh if it is a positive or negative
The only joint-less bone in the human body is the hyoid.
Plants and some types of archaea or bacteria use photosynthesis to create food.
