Further Reading / Supplemental Links
- People who lived during the Dust Bowl talk about their experiences, the Ganzel Group
http://www.livinghistoryfarm.org/farminginthe30s/water_02.html - Video of the Dust Bowlhttp://www.weru.ksu.edu/vids/dust002.mpg
Vocabulary
cover crop A special crop grown by a farmer in the wintertime to reduce soil erosion.
Cover crops often also add nitrogen to the soil.
development The construction of new buildings, roads, and other human-made features
in a previously natural place.
impermeable Not allowing water to flow through it.
leaf litter Dead leaves, branches, bark, and other plant parts that accumulate on the floor
of a forest.
pasture Land that is used for grazing animals.
topsoil The very important top few inches of soil, where much of the nutrients are found
necessary for plant growth; Part of the A horizon
Points to Consider
- Is soil a renewable resource or a nonrenewable resource? Explain the ways it could be
either. - Could humans live without soil?
- What could you do to help to conserve soil?
19.2 Pollution of the Land.
Lesson Objectives
- Define hazardous waste and describe its sources.
- Describe some of the impacts of hazardous waste on human health and on the envi-
ronment. - Detail some ways that we can control hazardous wastes.