Need help on this someone pls answer thanks

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.