How does precipitation affect the topology of the earth?

Please provide a brief summary of the following questions. Please be sure to address all of the questions outlined in this assignment.

How does precipitation affect the topology of the earth?
What natural disasters are caused by the water cycle?
Is water from a river or from a well more likely to be clean to drink?
Why is the overuse of groundwater a big concern?
What policies might people put in place to conserve water levels in lakes and aquifers?
Describe how surface rivers and streams produce erosion.
Describe the types of deposits left behind by rivers and streams.
Define groundwater.
Explain the location, use, and importance of aquifers.
Define springs.
Describe how wells work and why they are important.
Describe how the oceans formed.
Explain the significance of the oceans.
Describe the composition of ocean water.
Define the parts of the water column and oceanic divisions.