Why is there a shortage of water in that region? is question should he ask first as he begins to think critically about the issue.
Fresh water resources are dwindling as climate change strains the river that feeds 40 million people and agricultural regions in seven states. Some have suggested desalination technology as a means to increase that supply, reducing the stress on a river that supports a rising population from Wyoming to Mexico.
There are essentially two factors to the west that keep that moisture away. We are cut off by Mexico from any moisture that may be rising in the region from the south. The Sierra Nevada mountains above California, Oregon, and Washington state present another challenge.
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