Which of the following have a neutral charge? a)proton b)neutron c)electron d)plasma

How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)

Why is permeable soil best for plants that need a lot of drainage?

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.