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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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
What comprises an arthropod's exoskeleton?
a. Keratin b. Spicules c. Chitin d. Bone
Environmental & Atmospheric Sciences
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 would not be found in an alpine glacial valley?
A) paternoster lakes B) hanging valleys C) waterfalls D) esker
Environmental & Atmospheric Sciences