B. Both continental and ocean-floor topography are measured relative to sea level
Explanation:
On a topographic map, both continental and ocean-floor topography are measured relative to sea level.
The sea level is the reference surface for the continental and ocean floor topography.
- A topographic map is a map that shows landform using series of contour lines.
- The lines joins places of equal elevation.
- The elevation is usually referenced to the sea level surface.
- The sea level is taken as the surface with 0 depth or height.
- Continental topography is all places above the sea level.
- Ocean floor is below the sea level surface
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<span>In 1911 the Qing dynasty collapsed which brought an end more than 2000 years of imperial Chinese history. </span>
Honestly none of them. It should be 5.098 x 10^6
In which of the following can animals not be preserved as fossils?
A. Ice
<u>B. Water
</u>
C. Amber
D. Tar