It is absolutely true that China is seeking to lessen its dependence on coal by developing more hydro power resources. The correct option among all the options given in the question is the first option. China is blessed with natural rivers and it is slowly trying to reduce its dependence on coal powered plants to hydro power plants. This is also a great step towards reducing air pollution.
If you joined Santa last Christmas at the north pole (90 degrees latitude), you would have seen Polaris straight overhead and the celestial equator on your horizon. The point straight overhead on the celestial sphere for any observer is called the zenith and is always 90 degrees from the horizon.
So the answer is the North Pole.
Include or not include trace gases?
Water restrictions are put in place, so less water is to be used. Fires are more likely to happen. You can get arrested for waste of water. Also, people where masks and other devices to keep blowing dirt out of their nose mouth and eyes.
Trust me I lived in Amarillo Texas for a while and we were drier than the dust bowl.
