Answer:
Organism.
Explanation:
The cell is the smallest form of life. Cells work together to form tissues, tissues work together to form organs, and organs work together to create an organ system, and organ systems work together to create organisms. I believe "organism" includes all of these other levels.
Answer:
mass and volume
Explanation:
Matter is anything that has mass and takes up space
Well, photosynthesis makes the glucose that is used in cellular respiration to make ATP
hope that helped!