Carbon is an element
Oxygen is an element
⭐️Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. ... When the cell uses oxygen to break down sugar, oxygen is used, carbon dioxide is produced, and energy is released.⭐️
3.13 x 10 ^9
This is because only 1 number is front of the decimal and 2 numbers should be after