Today, Canada receives more acid deposition from the midwestern United States than it sends south across its borders. Cities in areas with warm climates are particularly likely to suffer from dry acid deposition. The major compounds contributing to ozone thinning are fine particulates. Seasonal ozone thinning is most pronounced over Europe. Rapid deforestation is currently occuring in all of the following except Brazil Mexico Australia.
Deforestation increases the ability of an area to hold water.
Today, desertification threatens the west coast of North America. Most of the freshwater in the United States is found in lakes. Most American cities now subject their wastewater to desalination. In the United States, most freshwater is used in homes. Solar-hydrogen energy produces radioactive wastes.