Historically, land is a dumping ground for waste 6 billion tons of waste produced each year • Agricultural • Commercial • Industrial • Domestic Normally, not a problem if disposed of properly
Household wastes – breeding ground for rats, flies, mosquitoes One quart used motor oil – contaminates 100,000’s gallons of drinking water Leachate – liquid that results when water moves through any non-water media and collects contaminants
Land = earth = soil Soil is critical to life • Plants get nutrients from soil • Animals get nutrients from plants
Four major components • Mineral particles (rocks and clays) • Organic matter • Water • Air Soils vary in different aspects • Color • Thickness • Layers • Amount of clay, salt, & organic matter
Factors affecting how fast pollutants move through soil • Soil composition • Soil structure • Pore sizes • Amount of organic matter
Image: www.lee-county.comO Horizon – Organic matterA Horizon – Top soilB Horizon – SubsoilC Horizon – Parent Material
1.People Cut forest for furniture.2.Plastic is the main source of land pollution.3.People throw house garbage on roads.4.Some industries throw their waste on land.
1.People should not cut trees for making furniture.2.People should not throw garbage on land.3.Plastic bags should be avoided for prevention ofland pollution.4.Industries should not throw there waste on land.