Answer:
As one plate subducts, it sets up convection currents in the upper mantle that 'exert a net trenchward pull'
Explanation:
The answer is C, 2004 ... decreasing
Answer:
The two broad, general characteristics used when describing a place are the cultural and physical geography.
Explanation:
The first option is not correct because HEI is not a geographic branch, but it is one of the geographic themes, and while it would be helpful, it is not something that will answer on the task properly.
The second option is not correct because these are actually focused on the human population, so the describtion of the physical environment will be lacking.
The third option is correct because the cultural geography will properly describe the human aspects, while the physical geography will properly describe the physical characteristics of a place.
The fourth option is not correct because the movement is neither a geographic branch, nor it will be able to help in describing a place.
