A line has one dimension, length.
A plane consists of an infinite set of lines.
In urban areas, there are more people, therefore not a lot of farmland. (that eliminates C) If city buildings don't allow flood waters to recede, that could be dangerous in many ways. (So A is still a reasonable answer) If most cities are built in flood zones, there should be some form of shelter if houses aren't safe. Pollutants and diseases being carried in water are already dangerous, but easier to spread with rapid flood waters that are sweeping everywhere. So your best answer would be either A or B.
I would say that the US and the Soviet Union at the end of WWII withdrew their troops as soon as a demilitarized zone was created. Also, I am sure they would require a peace treaty to be signed with Germany before withdrawing troops.
This process where the sheets might peel off like an onion is called exfoliation.
Rock exfoliation can be described as a process that occurs causing sheets of rocks to be peeled from the surface of a rock. The process is also describes as Onion skin weathering.
Pressure release that happens during erosion could also be responsible for this happening. Curved plates of rocks would be stripped from underneath.
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Answer:
The ground is shaken 10 times less by a magnitude-4 quake than by a magnitude-5 quake.
Explanation:
The Richter scale is a system developed by American scientist Charles F. Ritcher to measure the magnitude of earthquakes according to the extent of waves detected by seismographs. In that respect, the larger the earthquake in the scale of Richter, the more damage it causes. Thus, a magnitude-5 earthquake makes the ground shake more and produces more considerable destruction than a magnitude-4 quake.