Most reports of national erosion loss are based on
A)thousands of measurements of soil depth around the country.
B)measurements of the amount of soil suspended in the oceans and major rivers.
C)changes in the salinity and silt of the ocean where major rivers flush out to sea.
D)indirect measurements using maps,aerial photography,and precipitation data from land stations.

Question

Quizplus · Accepted Answer

Most reports of national erosion loss rely on indirect measurements, such as maps, aerial photography, and precipitation data from land stations, rather than direct measurements of soil depth or suspended soil in oceans and rivers.

Most Reports of National Erosion Loss Are Based on