Approximately three-fourths of the world's tar sands resources are located in which country?
A. the United States
B. Russia
C. Canada
D. Iraq
E. Ukraine
Answer: C
Environmental & Atmospheric Sciences
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This figure shows plate boundaries south of Alaska. Which location is on a transform boundary?
A. 1 B. 2 C. 3 D. 4 E. 2 and 3
Environmental & Atmospheric Sciences
Which of the following descriptions applies to sunspots?
A. They are warmer regions on the sun's surface. B. They are located in regions of strong magnetic fields. C. They reach a maximum size approximately every 15 years. D. They appear lighter than the rest of the sun's surface.
Environmental & Atmospheric Sciences
Which of the following would not be found in an alpine glacial valley?
A) paternoster lakes B) hanging valleys C) waterfalls D) esker
Environmental & Atmospheric Sciences
What comprises an arthropod's exoskeleton?
a. Keratin b. Spicules c. Chitin d. Bone
Environmental & Atmospheric Sciences