Q77
What is the function of a Digital Elevation Model (DEM) in GIS?
A.
To show vegetation types
B.
To represent terrain elevations
AnswerC.
To map groundwater
D.
To identify mineral deposits
Answer: Option B
Solution
Answer: Option B
Solution:
A DEM represents the Earth's surface elevations digitally.It is essential for terrain analysis, slope stability, watershed delineation, and construction planning.