Our water resource face a host of serious threats , all of which are caused primarily by human , that included sedimentation , pollution and much more
Answer:
Unitary
Explanation:
In a unitary form of government, all the power rests in a central government. The country may be divided into states or other sub-units, but they have no power of their own
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
The body of water that your looking for is the Black sea!
http://sci.sdsu.edu/how_volcanoes_work/flow_features.html
This article;e has all the information you need, summarized.
Hope it helps and good luck.
