1. What are the primary repositories of fresh water on Earth? Which of these repositories is the largest?
The primary repositories of fresh water on Earth is above ground or below ground. One-fourth is below ground and the rest is above ground, and the largest repositories are ice and glaciers.
2. What is the difference between a confined and unconfined aquifer? How do their recharge rates differ?
The difference between a confined and unconfined aquifer is that a confined aquifer is an aquifer that is surrounded by a layer of impermeable rock or clay. Unconfined aquifer is when water can easily flow in and out of such an aquifer.
3. How do human activities worsen the effects of droughts and floods?
Human activities worsen the effects of droughts and floods because when humans build structures they are taking away natural land that may prevent flooding, and our farms are influencing droughts and floods.
4. How do levees, dikes, dams, and aqueducts differ from one another? What is the primary purpose of each?
Levees, dikes, dams and aqueducts differ from one another because a levee is an enlarged bank built up on each side of river to prevent flooding. A dike are very similar to levees but they are normally built to stop ocean water from flooding adjacent land. A dam is a barrier that runs across a stream/river to control the flow of water. An aqueducts is a canal or ditch used to carry water from one location to another.
5. Why is it necessary to desalinize water?
It is necessary to desalinize water because poorer or developing countries would be able to get fresh water from their salt water.
6. What are the dominant uses of water by humans?
The dominant use of water by humans is used for agriculture and is about 70% used and then 30% used for industrial and household uses.