How much rock would be eroded in 512,000 years in millemeter

Explanation:Coastal Erosion. As global sea level rises, the action of waves at higher elevations increases the likelihood for extensive coastal erosion. Already, coastal erosion costs roughly $500 million per year for coastal property loss, including damage to structures and loss of land

law of conservation of matter

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation: