What is being depicted by this figure?
A. continent-continent convergence
B. early stages of seafloor spreading
C. early stages of subduction
D. a boundary that is mostly a transform fault
E. continental collision
Answer: B
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Energy efficiency is a measure of
A. Total energy consumed over a year divided by time spent B. Energy produced compared to energy consumed C. Energy used per unit of time D. Energy stored in a unit of fuel E. Heat produced by a barrel of fuel
Continental red beds contain large amounts of metallic iron. Indicate whether the statement is true or false
Chemical weathering occurs most rapidly in which of the following environments?
a. mid-latitude desert b. arctic tundra c. low-latitude desert d. tropical rainforest
In general, the healthiest soil texture for plants is one in which
A) sand dominates, clays are next highest in concentration, and silt has the smallest concentration. B) clay dominates, sands are next highest in concentration, and silt has the smallest concentration. C) sand dominates, silts are next highest in concentration, and clay has the smallest concentration. D) there is a relatively even percentage of sand, silt, and clay.