Thiết bị không phải nguồn điện:
Đáp án D
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:
Answer:
I really don't know. I think it's E.Current
sorry if I'm wrong