Thick part of the earth crust?

The crust of Earth is of two distinct types: Oceanic: 5 km (3 mi) to 10 km (6 mi) thick and composed primarily of denser, more mafic rocks, such as basalt, diabase, and gabbro. Continental: 30 km (20 mi) to 50 km (30 mi) thick and mostly composed of less dense, more felsic rocks, such as granite.

people cluster in places that have rich soil, fresh water, and mild climates.

explanation:

answer; i believe the answer is (25%)plz check first good luck;