Which type of rock did the Vulcanist doctrine explain incorrectly?
A) contact metamorphic rocks
B) intrusive igneous rocks
C) chemical sedimentary rocks
D) extrusive igneous rocks
Answer: C
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The Ancestral Rockies were most prominent in the _______ Period of the Paleozoic. Fill in the blank(s) with the appropriate word(s)
The Chicago Climate Exchange, in operation since 2003, has been engaged in which of the following?
A) cap and trade B) coal mining trade C) alternative energy production D) research in clean coal E) solar panel investment
Decades ago, a brick factory used to be located along a river. Waste materials and faulty bricks were piled along the banks of the river, and some of them fell into the water. Years later, some of these materials were removed
The bricks were still recognizable as bricks, some with the manufacturer's mark clearly visible on the front, but the edges and corners were rounded over. Why were the edges and corners of the bricks so rounded over while the faces of the bricks were largely untouched? What will be an ideal response?
Using the 20 standard amino acids how many dipeptides containing two different amino acids can be made?
A) 20 B) 39 C) 40 D) 380