It is next to a communist nation (North Korea) and its neighbors have extremely corrupt governments. Including China and Russia. They are the only "freest" country compared to its neighboring countries.
Answer: thermosphere is the layer of the earth's atmosphere directly above the mesosphere and directly below the exosphere while mesosphere is layer of the earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.
Low dissolved oxygen concentrations that occur in many bodies of water when nutrients stimulate the growth of algae that subsequently die and are decomposed by oxygen-using bacteria.
Drainage basin - the area of land drained by a river.
Catchment area - the area within the drainage basin.
Watershed - the edge of highland surrounding a drainage basin which marks the boundary between two drainage basins.
Source - the beginning or start of a river.
Confluence - the point at which two rivers or streams join.
Tributary - a stream or smaller river which joins a larger stream or river.
Mouth - the point where the river comes to the end, usually when entering a sea.
Hope this helped :)
