Place the items in order from highest to lowest degree of internal organization.
tissue
organ system
organ
cell

organ system> organ> tissue> cell

Explanation: Molecules combine to form cells, cells combine to form tissues, tissues combine to form organs, organs combine to form organ systems, organ systems combine to form organisms.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.