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What are the 3 MOST common elements on Earth???
PeriodicTable
# 1 OXYGEN!!!!
O = 46.6%Used by humans for breathing. All living things need it!
# 2 Silicon
Si = 27.7 %Used in electronic devices and alloys
# 3Aluminum
Al = 8.1 %Used in kitchen equipment, electrical equpiment and transportation (cars, buses, trains, etc)
http://www.windows2universe.org/earth/geology/crust_elements.html
ina5 added this comment 2012-05-02 06:53:58-05:00
ooo periodic table,chemistry
ina5 added this comment 2012-05-02 06:53:58-05:00
ooo periodic table,chemistry