A floodplain (or flood plain) is land area located next
to a stream or river that reaches to the bottom channels enveloping the walls
of valleys and often floods when there is too much water. This is the reason why
flood plains are made up of sediments: sand, gravel, loam, silt, etc.
D. Why people like other people.
That's social, not geographic.
Many people have different point of view when it come to population increase or decrease. People are sometimes careless or they care a lot
Watermelon and rubber bands; shows weakness of how the watermelon has evolved over time?