How would you calculate the molar mass of 2agcl?

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.

If two objects at different te,peraure are in contact with each other what happens to their temperature

What are several ways to reduce the effect of friction