What is earths surface made of?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Explain that newton first law,second law and third law of motion?

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.