I'm pretty sure some they are People adapt to their environment, changes to the earths enviroment can be benificial, Changes to the earth environment can be harmful, people change their environment, I'm sorry if I'm wrong on some of these. I hope this helps also :)
Murray River provides hydroelectric power and water for irrigation
it could also be (the discount rate on overnight loans is lowered) this could also be one of your answers
The valley of Mexico is a highlands plateau in central Mexico roughly coterminous with the Present-day Mexico city and the Eastern half of the State of Mexico
