<span> Solid Formed by inorganic processes Naturally occurring Definite chemical composition Definite crystalline structure If a rock has at least three of these </span>characteristics<span> then it is a</span>mineral<span> because some of these </span>minerals<span> don't have the exact same </span>characteristics<span>.</span>
There are many people in urban areas. If there are floods, it could kill a lot of people. Also, floods sometimes damage buildings. If the buildings collapse, it would cause a big problem.
