The most common group of minerals in Earth's crust are the ________
A) oxides
B) carbonates
C) native metals
D) silicates
Answer: C
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Find the hill in Sec. 8, T6S, R2E. This hill covers approximately how many acres?
The question is based on Map T-17 in the back of the Lab Manual, showing a portion of the “Antelope Peak, Arizona,” quadrangle (scale 1:62,500; contour interval 25 feet); a portion of this map is reproduced in black-and-white in Figure 31-3 as well. The map’s marginal information is visible along the left and top margins (“T.5S,” “R.2E,” etc.). __________ acres
Visible satellite images [INSERT FIGURE 6-35A. NO CAPTION]
A) are useful for identifying cloud-covered areas B) are useful for distinguishing between low-, medium- and high-level clouds C) are useful for observing clouds during both day and night
Tropical coral reefs typically form in areas of high wave energy
Indicate whether the statement is true or false
There is no evidence in the geologic record that multi-celled organisms of any kind existed prior to the Cambrian
Indicate whether the statement is true or false