Stop Mercury Spoiling Our Environment

Mercury in the environment is bio-accumulative, which means that it can build up in fish and cause health problems in humans and other animals that eat fish…..

http://www.dentistryiq.com/index/display/article-display/0559793416/articles/dentisryiq/front-office/dental-assisting_digest/2011/06/Prevent_the_release_of_mercury_into_the_environment.html