a great percentage http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/ The Most Important Organism http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/ oxygen production on Earth http://www.ecology.com/2011/09/12/important-organism/ it's algae that provides the most oxygen http://www.ecology.com/2011/09/12/important-organism/ between 70 and 80 percent a great percentage http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/ http://www.ecology.com/2011/09/12/important-organism/