Hurricane, volcano and earthquake are the natural disasters that all have the potential to wreck havoc and impact the human populations. So the correct option among all the options given in the question is option "d".
Widening rivers can be a very important cause that can increase the risk of flooding. The correct option among all the options given in the question is option "d". If the humans deliberately cut the banks and widens the river, then it can cause floods during the rainy season as the banks become weak to hold the force of water that comes in.
Answer:
The sand is supplied to the beach more slowly than it is lost to the deep waters. This prevents sand beaches from forming.
Explanation:
The formation of sandy beaches depends on a set of environmental forces that must interact with each other. These forces are summed up by the speed at which the sand is added to the solid part of the beach and the speed at which the sand is taken by the deep waters. This justifies the reason why sandy beaches are not formed in Acadia, because the speed at which the sand is captured by the deep waters, is greater than the speed at which the sand is added to the solid part of the beach.
