Answer:
Digestive
Explanation:
It is necessary for the body to function so it is technically an organ
No. The only thing that changed was the looks of the gasoline, not the chemical components.
<span>The wave nature of an electron is indicated by its motion and the diffraction and interference of electrons in a beam.</span>
I would say C. petroleum
A is wrong
B is impractical for "mainly used"
D thats too expensive