The Industrial Revolution has greatly impacted global agriculture such that
A) the need for fertilizers and herbicides has nearly been eliminated.
B) agricultural productivity has more than doubled.
C) soil degradation has been nearly eliminated.
D) the cost of world agriculture has dropped significantly.
B
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Which of these is a consequence of a strong pressure gradient force, especially in the mid-latitudes, and is strongest in the winter season?
A) polar-front jet stream B) subtropical jet stream C) low-level jet stream D) none of the above
Large crystals found in a fine-grained groundmass can indicate a(n) ____
A)origin from a magma with an early intrusive phase followed by an extrusive phase B)origin from a magma with an early extrusive phase followed by an intrusive phase C)rock of mixed volcanic-plutonic origin D)intrusive slow cooling process E)origin from a magma with an early intrusive cooling phase followed by an extrusive cooling phase
Briefly explain the concept of plate tectonics and why it is important for the study of geography
What will be an ideal response?
Warm air aloft is associated with constant pressure surfaces that are found at ____ altitudes than normal and ____ normal atmospheric pressure aloft
a. higher; higher than b. higher; lower than c. lower; higher than d. lower; lower than e. lower; the same as