Answer:
Our body cells require oxygen to release energy.
Explanation:
The oxygen that we take in during respiration is used to break down the food we eat to release energy from it. When we breathe in oxygen, it diffuses into blood from the lung, where it is transported by red blood cells to the entire body to be used to produce energy.
The lymph system creates extra white blood cells.
I think it's c: Quantity A is weight & Quantity B is mass
Autotrophs use photosynthesis to feed itself. An autotrophs is a plant that provides for itself and does not need to prey among other animals.
