The effects of living next to/by a volcano can be very deadly. If the volcano were to erupt, lava would burn down everything and you would be left homeless and the city (if there was one would be destroyed. You would also have lots of ash. Might not have a lot of time to prepare to leave. <span />
The tanks is unfit for consumption
An anticline - it is in an arch-like shape and its oldest rocks are located at its core.
Cutting down the trees! (Stop cutting them down)
And human presence disrupting the ecosystem (let the environment be)
The correct answer is - the Atlantic Ocean.
If South and Southeast Asia are excluded, then the moistest places on the Earth are influenced by the Atlantic Ocean. This places are the Amazon basin, the Caribbean islands, southern half of Central America, the east coast of North America, Western Africa, Ireland, and the British Islands. All of this places are very moist and it is a direct result of the Atlantic Ocean which has warm and moist currents that deliver the moisture in all of this places.