Answer:
A. silver
Explanation:
sorry if its not the answer your looking for!!
Most air pollution in United States and Canadian cities is caused by vehicle and industrial emissions. The correct option among all the options that are given in the question is the fourth option or option "D". This has led to increased amount of global warming. I hope the answer has helped you.
After the fall of much the Indians formed the three kingdoms which helped shape the geographical with the desert and Red Sea
I think its d, because its not ice and is not being constantly added to because its just recycling