Well dumping is a method, waste materials are dumped in open low labs away from the city.
I am pretty sure the answer is C. Depression
Mt Kilimanjaro can create its own climate due to how high it is, but most of the the temperatures are in the negatives.
Excise taxes are also known as "sin taxes" meaning that the government deems these products as unhealthy, sinful acts. They do this in order to restrict the supply of some goods and services to decrease the supply of those goods and services in the market which increases the price of them. It's used to discourage consumption of these products. It's a form of regulation.