Answer:
C. The byproducts of many medicines are responsible for polluting the Amazon River.
Explanation:
People are naturally going to live near clean water sources, that way it's easier to survive, so people are more likely to live near or in an oasis than in a hot dry area like a desert.
It is already hot, so it makes it more humid
Answer: Bassically, certain gasses like CO2 (Carbon Dioxide) that come from stuff like burning fossil fuels and global warming, they heat up the earth, are wastes and are used as fuel.
