Answer:
Oil
Explanation:
Since, unlike oil, source like wind, solar, water etc. come naturally we don't and can't replace them but when the viscosity in oil has been used up it must be change to allow the proper functioning of the machine.
Answer:
there want to eat healthy and and it profited two two ways its contibuted to 37 million and healthy lifesytle
Explanation:
Answer:
do it in your self hahahahahaa
The primary function of the respiratory system is to supply blood with oxygen
