The fact that atoms and molecules are always in motion helps scientists explain how solids turn into liquids. What is this explanation an example of? A. a hypothesis
B.
an observation
C.
a scientific law
D.
a scientific theory

Non renewable resources like petroleum eventually

Compare and contrast physical changes with chemical changes.

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