Which of the following is true of metamorphic landscapes?
A. They are often found near granite and other igneous rocks.
B. They commonly have a shiny appearance, if their minerals reflect light.
C. They commonly have platy, jagged outcrops.
D. All of these choices are correct.
Answer: D
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We calculate BSS = 10 * (540.3 - 543.6)2 + 16 * (602.9 - 543.6)2 + 17 * (489.8 - 543.6)2 = 105578.2 WSS = (10 - 1) * 46.42 + (16 - 1) * 47.42 + (17 - 1) * 48.92 = 91337.4 F = (BSS / (k-1)) / (WSS / (n-k)) = (105578.2 / (3 - 1)) / (91337.4 / (43 - 3)) = 23.1 The critical F value is F.05,2,40 = 3.23. The observed value vastly exceeds this, so we clearly reject the null hypothesis and conclude that the means differ across the groups.
Infant mortality rates are lowest in which of the following areas?
A) Western Europe B) Africa C) Asia D) South America
If you had to build a bridge linking South America to Africa, at what latitude would you build it? Why?
What will be an ideal response?
Marketing of which of the following non-native marine species by the aquarium industry is causing problems worldwide?
A) Atlantic comb jelly Mnemiopsis leidyi B) Seaweed Caulerpa taxifolia C) European green crab Carcinus maenas D) Atlantic cordgrass Spartina alterniflora E) European zebra mussel Dreissena polymorpha