Answer:
B
Explanation:
Adding a dopant is correct on edge.
Answer: Physical changes in nature could then be erosion in a mountain, the melting of snow, and a river freezing over from the cold. Since none of these changes affect the chemical composition of the mountain, the snow, or the river, they are physical changes.
Explanation:
It transfers the electrical current from the point of contact on the lightning rod into the ground.
