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The Dust Bowl
https://www.youtube.com/watch?v=CM3ZHMBhP2k
https://www.youtube.com/watch?v=jQYKJaWuj0Y
Weathering : The breaking down of rocks on the Earth into smaller pieces.
Erosion: The process of moving weathered rock and sediment from one place to another.
Deposition: The dropping or settling of eroded material.
Weathering
https://www.youtube.com/watch?v=XteN4hRrbJM
Erosion
https://www.youtube.com/watch?v=2311yO5opVk
https://www.youtube.com/watch?v=d0jVywral14
http://www.ck12.org/earth-science/Erosion-and-Deposition/enrichment/Earths-Natural-Processes-Example-2/
http://mamontoff.org/weathering%20-%20erosion%20-%20deposition.htm
Natural Resources
Mexico City
Beijing, China
New York City
According to the group Texas PEER, air quality in Texas has worsened significantly under Gov. George W. Bush’s administration. The Houston-Galveston area has had eight of the top ten ozone (smog) peaks in the nation, far surpassing Los Angeles.
Houston, TX
Renewable Energy ResourcesCan be replaced in a lifetime.
Nonrenewable Energy Resource
Cannot be renewed in a lifetime and often take millions of years to make.
https://www.youtube.com/watch?v=eUs4oA1RIMQ
Soil.
https://www.youtube.com/watch?v=iGfco7kNzJA
How Soil Forms
Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. This material is called leaf litter. When animals die, their remains add to the litter.
Different Types of Soil
https://www.youtube.com/watch?v=uS7zfeK4OTQ
Soil Conservation: is a way of managing soil that reduces erosion and maintains the nutrients plants need.
Strip Cropping: Planting wind breaks between sections of crops can stop or slow down erosion of top soil by the wind.
Terracing
Strip Cropping
Crop Rotation: Rotating crops so the soil is not depleted of nutrients.