Report Abuse. Transgenic organism or genetically modified organism is a living organism that has a foreign DNA introduced to its genome. On daily basis we meet transgenic plants which carry resistance genes for insecticides or viruses.eport Abuse. Transgenic organism or genetically modified organism is a living organism that has a foreign DNA introduced to its genome. On daily basis we meet transgenic plants which carry resistance genes for insecticides or viruses.
Sulfur dioxide and nitric oxide (NO) are the primary air pollutants, and ozone is a secondary pollutant (though there are negligible direct emissions of the gas itself). Nitrogen dioxide (NO2) is both a primary and secondary air pollutant. Other important gaseous pollutants are: ammonia, carbon monoxide, volatile organic compounds (VOCs) and persistent organic pollutants (POPs) which we discuss below.
Drinking Water Contaminants â Standards and Regulations. EPA identifies contaminants to regulate in drinking water to protect public health. The Agency sets regulatory limits for the amounts of certain contaminants in water provided by public water systems. These contaminant standards are required by the Safe Drinking Water Act (SDWA). EPA works with states, tribes, and many other partners to implement these SDWA provisions.