Prior to the Industrial Revolution, the concentration of carbon dioxide in the atmosphere oscillated between 180 and ____ ppm.
A. 200
B. 280
C. 350
D. 390
E. 420
Answer: B
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The ________ is characterized by subsidence and divergence near the 30? latitude, north and south, and consists of several semipermanent, anticyclonic centers.
Fill in the blank(s) with correct word
In geography, we can describe the location of a place by ________, which is the physical character of a place
A) location B) situation C) site D) direction E) none of the answer choices are correct.
Frontal lifting:
A) is not related to temperature differences between air masses. B) leads to increased pressure on the warm front. C) can act in a way that is analogous to orographic lifting. D) is most pronounced when a cold front meets a cold front.
The mid-oceanic ridge is 80,000 km-long mountain range on the ocean floor. Where does this mountain range lie in terms of plate tectonic features?
What will be an ideal response?