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.
A primary pollutant can be defined as a harmful chemical that directly enters the air as a result of a natural event or human activities. For example, when coal, oil, natural gas or wood is burnt, carbon dioxide and carbon monoxide are formed, automobiles contributing a large share of carbon monoxide.