Well first off you can learn about Global Warming and how to help stop it so you can make a difference in the world! You could also learn about what types of animals that you can save or that you want to help or maybe even what to do about all sorts of stuff that you want to learn about.
We can reject answers C) and D) :those are two famous cities in Russia, and cities would be too small to take up three-forths of Russia, the biggest country in the world.
Murmansk is also a city: in the North-West of Russia, in the Arctic Circle.
So the correct answer is: Siberia
The mountain itself, at an elevation of 5,725 feet
Demand curve is the ratio of demand (of whatever) to its price. It indicates the inverse relationship of what's demanded and the price