How many carbon atoms are represented by Mg(HCO3)

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.

What natural processes produce large quantities of co2

How does the motion of particles in a gas change as the gas cools