Год выпуска: 2011 Автор: Shamaila Qasim and Dr. Mumtaz Hussain Издательство: LAP Lambert Academic Publishing Страниц: 96 ISBN: 9783844305050
Описание
Environmental pollution occurs due to release of harmful gases from industrial units. It results in the form of acid rain either wet or dry form. Factories, vehicles, power stations and industries burn fossil fuels and produce harmful gases, comprising sulfur dioxide, or oxides of nitrogen, which become the major course of acid rain. Acid rain sometimes falls in the form of precipitation which can be snow, rain, dew or fog. Dry deposition is absorption of particles such as polluting gases, dust particles and gaseous elements by the surface of the Earth. The pH level of acid rain may be less than 7 but when the concentration of pollutants increases in the atmosphere, it further decreases and strong acids like sulfuric and nitric acid are formed. Acid rain induces visible lesion injury on plant shoots and on other tissues. It also destroys epicuticular wax; reduces photosynthetic rate and chlorophyll contents. Acid rain in plants can considerably reduce plant height,...
