Hailey is preparing a debate on the benefits of using synthetic polymers over natural polymers, and she wants to create a list to get started. What of these should Hailey include in her list? Synthetic polymers are biodegradable. Synthetic polymers are not flexible. Synthetic polymers are recycled cheaply. Synthetic polymers are inexpensive to produce.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic