eARTH'S rESOURCES

How coal is made...
coal is made when rocks,
dirt,and material from a
liquid(sediment) creates
pressure and heat to form coal deep in the ground after millions of years.

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•                Gas is made ....
•  Natural gas is made from the decomposit 
• of a plant. This matieral is not a profitable
• matieral, and is a health hazard to public.

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• How long have trees been around....
• The first trees ( big plant) 30 meters) with a 
• woody stem first surfaced about 360 million
• years ago.

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• How does eroisen work....
• ersion is when rock disolves or brakes down.
• It is caused by ice,water,wind , and gravity
• Organic eroisen happens when plants break
• Rock with there growing roots or plant acid. 

bibliograpgy

• http;//www.fplsafetyworld.com/?ever=kkblue coleutilid=fplforkids
• http;//www.ongeogolegy.org/extra/kids/earthsprocess/weatheringhtm/
• http;//www.answersonyahoo.com/questions/index?quid=2006112522535aazbksz