What type of decay is illustrated by the equation below?

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 metric units would you use to measure the thickness of a key

What type of matter is made of only one kind of atom