Organisms contribute to chemical weathering by ____
A)mixing soil
B)bringing material from depth to the surface
C)wedging themselves into cracks in rocks
D)mixing sediment particles
E)removing ions from soil water
E
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The average Japanese farmer is ________ years old
A) 35 B) 45 C) 55 D) 65
The magnitude of its economy implies that most of China's population has a reasonably high standard of living.
a. true b. false
Water in its liquid state is common in our solar system
Indicate whether the statement is true or false
Faults that generate earthquakes ____
a. ?are separated by empty areas free of faults b. ?zig-zag across terrain, separating into fault segments at each bend c. ?are split into segments by cross faults d. ?are separated into segments by sedimentary layers e. ?are separated into segments by construction and highways