Answer:
you can do a celser lava lamp its really easy, i can give you a link if you need?
Explanation:
Answer:
Relative motion of source and observer.
Explanation:
Doppler Effect : It is the change in the observed frequency of the wave due to<em><u> relative motion of the source and object </u></em>.
If we fertilize a plant, then its height increases fast. Always use if then format