Contrast density variations with depth in the high and low latitudes. Why do high-latitude waters generally lack a pycnocline?
What will be an ideal response?
Tropical lower-latitude surface waters are lower density than high-latitude surface waters. As you go deeper in the water column, density increases, so there is a pycnocline in low-latitude waters, while high-latitude deep water is only marginally denser than the water at surface, so there is no pycnocline.
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The basic building block of silicate minerals is the silica ____________________. Fill in the blank(s) with the appropriate word(s)
In order for a particular type of material to be classified as a mineral, it must ________.
A. be a solid B. have a crystalline structure C. have a definite chemical composition D. occur naturally E. All of the answers are correct.
From which direction does the prevailing wind blow? (The top of the map is north.) How can you tell?
The following questions are based on the portion of the “Kane Spring NW, California” quadrangle (scale 1:24,000; contour interval 10 feet) shown in Figure 46-6. These isolated dunes in the desert near the Salton Sea (33°11'02"N, 115°52'20"W) are moving over a surface that is only thinly covered with sand. To view this map in color, go to the Lab Manual website or scan the QR code for this exercise. What will be an ideal response?
What is the minimum number of oxygen atoms present in an anhydride?
A) 1 B) 2 C) 3 D) 4