19.2 POLLUTION OF THE LAND
Learning Targets
1. Define hazardous waste and describe its sources
2. Describe some of the impacts of hazardous waste on human health and
on the environment
3. Detail some ways that people can control hazardous wastes
Pollution of the Land
1. Land can be lost due to pollution by hazardous wastes
a) Hazardous waste: ______________________________________________
_______________________________________
i. Toxic: poisonous
ii. Chemically active: explosive
iii. Corrosive: destroys other things by chemical reactions
iv. Flammable: easily catches fire
b) Gas and motor oil, batteries, paints, pesticides, radioactive wastes, etc.
Superfund Sites
1. Areas that are heavily polluted with hazardous waste can be classified as ______________
2. ________________________________
3. ________________________________
4. __________________________________________________________
5. The Superfund Act has reduced the amount of hazardous waste dumped by companies
Impacts of Hazardous Waste
1. Health effects of waste may not __________________be visible
a) Long-term health effects:
i. _______________________
ii. ______________________ and developmental problems
iii. ___________________________ and infant mortality
________________________ because they are growing and absorbing
more chemicals from the environment
iv. ___________________
Lead and Mercury
1. _____________________________ are especially toxic to humans. They
damage brain and nervous system function
a) Lead was once an ingredient in ______________________________
b) Mercury waste comes from ___________________________________________
2. Lead was officially banned from gasoline (_______) and paint (________) in the US
Preventing Hazardous Waste Pollution
1. _______________________________________________________________
a) _________________ will soon pass us
2. Superfund sites are awaiting clean up
3. Hazardous wastes must be carefully stored or disposed of properly to
_______________________________________________________________
4. Use non-hazardous materials instead
a) Less industrial chemicals and more organic solutions
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