Which is the correct terrm that indicated that an oceanic crust is pushed downward by a colliding contintental crust? a. drifting crust b. subduction c. uplift d. tectonic rejuvenation

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)