Answer:
A The rate at which your cells use energy
Explanation:
Oxygen and sugar. Or in terms of compounds, O2 and C6H12O6
Your cardiovascular system is what moves blood through your body, delivering oxygen, nutrients, and more to its many cells. Those veins and arteries keep you alive. In your home, there are pipes that deliver water to different rooms of the house, helping you stay clean and hydrated.
I think the answer is: Food for the plant
