Problem: - The energy causes the fault lines give way - The earth's plates move - The energy radiates outward from the fault in all directions - The seismic waves shake the earth as they move through it. What might be the first step of the process?

A: Energy builds up in the crust of the earth

Problem: - The fire surrounds the vicinity - The animals are trapped - Those that survive have their habitat destroyed - The survivors must find a new habitat - Conflict with other animals occur. What might be the first step of the process?

A: A forest fire starts

Problem: - The water freezes into ice - The cracks expand - Over time the rocks split - The rocks are now in smaller pieces. What might be the first step of the process?

A: Water gets into cracks in rocks

Problem: - A large amount of rain occurs - The water builds up behind the dam - The dam opens its floodgates when it starts to get full - The water flows into a river below the dam - The dam closes its gates - The dam will occasionally open its gates again to gradually release more water - Eventually all of the floodwater will be slowly released into the river without causing any flood damage. What might be the first step of the process?

A:
A dam is built in an area prone to flooding