Answer:
Because of diversion and climate change
Explanation:
The Syr Darya and the Amur Darya have been diverted due to extensive irrigation projects, that later failed. One of the Amur Darya's sources, the Zeravshan river, formerly reached the Amur Darya. The problem worsens further due to climate change, which evaporates the water.
edit: Clarification, the Syr Darya and the Amur Darya are the Aral Sea's sources
Yes it is because we are born with it or at least if you are referring to the USA
The geological feature responsible for the volcanic activity in this part of the world is the convergent tectonic boundary between the North American tectonic plate and the Pacific tectonic plate.
The Aleutian Islands are part of the so called ''Ring of Fire''. This means that they are part of the most active volcanic chain in the world. This is due to the convergent boundaries between the Pacific tectonic plate from one side, and the North American, South American, Eurasian, and Australian tectonic plate from the other side. The Pacific plate is submerging bellow all of them, and this contributes to the release of lots of magma and pressure towards the surface of the Earth, thus creating volcanoes in close proximity to the tectonic boundaries.