Evaporite deposits are important sources of ________.
A. sand and sandstone
B. lead and tin
C. iron and aluminum
D. copper and zinc
E. gypsum and halite
Answer: E
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Channels that add their flow to a trunk stream are called ____________________
Fill in the blank(s) with correct word
This geologic time principle is usually associated with sedimentary rock units.
A. principle of cross cutting relations B. principle of original horizontality C. principle of superposition
Which of the following gives the main reason why eastern Canada is more humid in summer than the Canadian coastal areas of the Pacific?
A. There is lower air temperature in Southern British Columbia. B. There is low relative humidity of the air over the Pacific Ocean. C. There is higher water temperature in the Gulf of Mexico. D. There is higher air temperature in eastern Canada.
How was the first continental crust formed?
What will be an ideal response?