Some way stations along the Silk Road became modern cities. A lot of people wants to modernize their place not knowing that they are actually losing the real beauty of their place by building something that they thought would make their place beautiful by modernizing it but it does not.
Troposphere is the layer closest to earth, which includes the air that we breathe. After this comes the Stratosphere which includes the ozone layer and then the Mesosphere. After this it's the thermosphere and then the exosphere.
The one I didn't mention is the methosphere - this is the correct answer!
A tributary is the name given to a river or stream that flows into a main river.
Answer: Well Russia is the largest country