Answer:
Topographic maps have contour lines that connect points of identical elevation above sea level. Contour lines run next to each other. Adjacent contour lines are separated by a constant difference in elevation, usually noted on the map. Topographic maps have a horizontal scale to indicate horizontal distances.
8 1/5 = 8.2 -2
=6.2 * 4^3 (4*4*4)
=396.8 + 24.6
= 421.4
Schist has the highest metamorphic grade.