Land Pollution
the trapping of heat by carbon dioxide and other gases in the air
what are landfills?
huge pits where waste is dumped and buried
what is pollution?
any dirty or harmful substance found in the environment
what is global warming?
trash produced by humans
what is smog?
a yellow-brown haze that forms when sunlight reacts with air pollution
what are other sources that cause pollution?
Natural sources, like forest fires
how many pounds of trash does a normal human produce daily?
4.4 lbs
What are pesticides?
products used on crops to control insects and other pests