(par 7.4.2.2.1. 7) Acid rain – taken from Wikipedia
Acid rain https://en.wikipedia.org/wiki/Acid_rain From Wikipedia, the free encyclopedia Processes involved in acid deposition (note that only SO2 and NOx play a significant role in acid rain). Acid clouds can grow on SO2 emissions from refineries, as seen here in Curacao. Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). […]
(par 7.4.2.2.1. 7) Acid Rain – from National Geographic
Acid Rain (from National Geographic) http://environment.nationalgeographic.com/environment/global-warming/acid-rain-overview/ Acid rain describes any form of precipitation with high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth. Rotting vegetation and erupting volcanoes release some chemicals that can cause acid rain, but most […]
(par 7.4.2.2.1. 6) What is Bacterial Contamination?
What is Bacterial Contamination? http://www.wisegeek.com/what-is-bacterial-contamination.htm Bacterial contamination is a situation which occurs when bacteria end up in a location where they are not supposed to be. It is often used to refer to contamination of food by bacteria which can cause disease, but can also occur in other settings. This situation is not desirable, because […]