GM foods are classified into one of three generations. First-generation crops have enhanced input traits, such as herbicide tolerance, better insect resistance, and better tolerance to environmental stress.
Types of systems. There are multiple systems by which water treatment systems companies can remove contaminants from water. Point of entry systems: Point of entry water treatment systems are able to treat all of the water entering a home or business and are installed after a water meter or storage tank.
The latter is called water reclamation and implies avoidance of disposal by use of treated wastewater effluent for various purposes. Treatment means removing impurities from water being treated; and some methods of treatment are applicable to both water and wastewater. The physical infrastructure used for wastewater treatment is called a wastewater treatment plant (WWTP).