Earth has a great deal of water, but most cannot be used by people. More than 99 percent of Earth's water is frozen, underground, or salty.
Write a report that explains how desalination can solve the problem of water shortages. To do so, research why water shortages exist and how the process of desalination works. Here are some questions to guide your research:
If there's so much water on earth, why do shortages occur?
How does the desalination process work?
What are some advantages and disadvantages of desalination?
How much fresh water can a desalination plant make?
What are some things you can do to solve the problem of water shortages?
Are you ready? Begin by visiting the Web sites listed in Step 2. Look for answers to the questions above, and write down what you learn in the note-taking boxes.
You may use search engines to research other Web sites. Or research desalination at the library. When you have finished, follow Steps 3 and 4 to write your problem and solution essay.
Step 2. Research
Research answers for the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!
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