is the smooth, flexible and slippery layer of tissue that covers the ends of bones and helps reduce friction when bones move. Cartilage

marrow

periosteum

compact bone

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.

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

How many grams of phosphorus are contained in 5.09 moles of phosphorus?