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.
Lagoon Systems. Lagoons are one of the oldest wastewater treatment systems created by humans. They consist of in-ground earthen basins in which the waste is detained for a specified time (detention time) and then discharged. The size and depths can vary, as well as the degree of treatment.