Because fresh water is limited in supply, ensuring that water is safe for human use and consumption is a major concern. With the expansion of industry and the dumping of chemicals and other waste products, water sources have become smaller and more polluted.
Because fresh water is limited in supply, ensuring that water is safe for human use and consumption is a major concern. With the expansion of industry...
Although climate changes have occurred at times in the distant past, the rate at which climatic changes are taking place seems to be increasing, causing concerns that the environment and population of humans and other animals will be adversely affected.
Although climate changes have occurred at times in the distant past, the rate at which climatic changes are taking place seems to be increasing, causi...
