Answer:
Short Answer: Uplift and Erosion activities
Explanation:
Let's understand this briefly,
Name/Type - Grand Canyon (deep gorge)
Location - Northern Arizona (USA)
Formation - About 6 millions years ago
How - When the river (Colorado) started to cut channels through layers of sedimentary rocks
Formation Process - Weathering and Erosion
Forces which acted - Wind, Precipitation, Streams and snowmelt
Depth - 1830 m
According to question,
It is formed due to tectonic uplift in the region and due to vast erosion activities affected by enormous number of factors.
The answer is F.
An unsaturated zone is the portion of the subsurface above the ground water table where air as well as water are present in its pores.
Therefore the statement is false as the pores would not be totally filled with water.
Hope it helps!