Which of the following pairs of elements are the most abundant in the continental crust?
a. Calcium and oxygen
b. Sodium and silicon
c. Silicon and iron
d. Aluminum and oxygen
e. Silicon and oxygen
e. Silicon and oxygen
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Fossil fuels currently supply about 50 percent of the world's commercial energy supplies.
Answer the following statement true (T) or false (F)
What mineral is characterized by a reddish streak, as shown in this photograph?
A. calcite B. quartz C. magnetite D. hematite E. feldspar
Found in Xinjiang and Mongolia, and in parts of western India, Pakistan, and Afghanistan, this climate zone is often along high mountains posing difficulties for agricultural production. These factors result in it being the Asian region's least inhabited climate zone
a. Semi arid / Steppe b. Humid subtropical c. Humid continental d. Tropical savanna e. Marine west coast
Briefly describe the Cornucopian and Cassandran economic positions relative to their environmental views
What will be an ideal response?