Which of the magma systems shown is most likely to include felsic or intermediate magmas?
A. B and C
B. C, D, and E
C. A and B
D. A, B, and C
E. B, C, and D
Answer: B
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In a rural hilly neighborhood, a landowner uses bulldozers to clear all but the largest trees and cleans up a nearby stream, lining the bottom of the stream with decorative rocks and stepping-stones
Planting lawn grasses around the base of the trees, the owner wants to create a park-like setting around his home. We expect that in this ecological simplification of the cleared yard, there will be A) more species of invertebrates in the stream and on the land but fewer species of vertebrates and plants everywhere. B) more mammal and plant species but fewer birds and invertebrates on the land and in the stream. C) fewer species of vertebrates and plants everywhere but more invertebrates in the stream. D) fewer species of plants, invertebrates, and vertebrates everywhere.
Which of the following is useless to animals leaving at great depths, due to the high pressures there?
A. a swim bladder B. a swim bladder full of gas C. a swim bladder full of lipids D. a large mouth E. fins
A dense layer, often forming in the B horizon under calcification is ________
A) solum B) regolith C) a hardpan D) a latosol E) vadose