The U.S. EPA estimates that species extinctions will occur at a rate of one to eleven percent per decade between 1975 and 2015, with aquatic species facing a higher threat of extinction than bird or mammal species. Many of the pollutants that end up in our rivers and streams - oil and other car fluids, household chemicals, pesticides, mercury, and others - can be toxic to aquatic animals, preventing them from reproducing and developing properly, or even causing death. Some of the most-affected animals are those that live at or near the bottom of an aquatic habitat where pollutants tend to settle, such as fish eggs and filter feeders (mussels and clams).
Viewer Tip: Rain water can wash pollutants from driveways and streets, into the storm drain, and directly to local rivers and streams – untreated! One of the easiest ways to help protect water quality is to keep your car, boat, or motorcycle properly maintained. Check regularly for fluid leaks, and fix them promptly to prevent outdoor spills. If a spill does occur, clean it up with an absorbent material, such as kitty litter or sand – never wash spilled fluids into the storm drain.
Seasons: Spring, Summer, Fall, Winter
(Sources: US EPA. Threats to Aquatic Biodiversity. http://www.epa.gov/bioindicators/aquatic/threats.html and Aquatic Biodiversity: Pollution. http://www.epa.gov/bioindicators/aquatic/pollution.html; )
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