There are so many building so when the earth is shook, all the building come crumbling down. many people where killed from this
This is what I found. Raindrops form when microscopic water droplets bump into each other in clouds. the more turbulent the clouds the bigger the raindrops get
Changes in the orbit of the earth caused the ice sheets to spread across Canada.
I think the two sources would be drip irrigation which is like a river, lake, groundwater, etc... The second source could be is making a new irragation system that could deliver water faster.
