Which of the following best describes constructive forces?
A. forces that build up, or create, landmasses
B. forces that wear down, or destroy, landmasses
C. forces that change the appearance of weathered rock
D. forces that are constant
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To determine the answer to this question, we can evaluate each option and choose the one that best matches the characteristics of constructive forces.
Option A: Forces that build up, or create, landmasses
This option describes constructive forces accurately. Constructive forces are responsible for the formation and growth of landforms on Earth's surface. These forces include processes like volcanic activity, mountain-building, and deposition of sediment.
Option B: Forces that wear down, or destroy, landmasses
This option describes destructive forces, also known as destructive processes or agents. These forces tend to break down or erode landforms over time. Examples of destructive forces include weathering, erosion, and mass wasting.
Option C: Forces that change the appearance of weathered rock
This option describes the effect of both constructive and destructive forces. While constructive forces can change the appearance of weathered rock, destructive forces can also have a similar impact. Therefore, this option does not exclusively define constructive forces.
Option D: Forces that are constant
This option refers to forces that remain unchanged over time. Constructive forces, on the other hand, are not constant. They operate intermittently and are often driven by dynamic processes like plate tectonics, which are not constant.
Based on the explanations above, option A is the most accurate description of constructive forces. They are responsible for building up, or creating, landmasses.