Anything that is medal is connected to earth
Chemical energy is the type of energy obtained from food. If you want more info look up information about the mitochondria and ATP. I hope this helps!
Answer:
Dry cells have high energy density or power stored to weight ratio.
Explanation:
(1) dry cell are light in weight and small in size
(2) dry cell can be transported from one place to another
(3) there is no fear of leakage in dry cell
(4) they can easily be used to run simple electrical devices