All the Dirt on Gardening

Environmental News Network http://www.enn.com/ecosystems/article/45308 reports that plants help humans breathe and the earth heal from human actions. "Plants "breathe in" CO2 and create biological mass. This is a form of sequestration.  Forests, grasslands and shrublands and other ecosystems in the West sequester nearly 100 million tons of carbon each year, according to a Department of the Interior recent report. Grasslands occur naturally on all continents except Antarctica. In temperate latitudes, such as northwestern Europe and the Great Plains and California in North America, native grasslands are dominated by perennial bunch grass species, whereas in warmer climates annual species form a greater component of the vegetation. Carbon that is absorbed through natural processes reduces the amount of carbon dioxide in the atmosphere. The 100 million tons sequestered in western ecosystems is an amount equivalent to — and counterbalances the emissions of — more t...