The shape of a 'p' orbital resembles: a balloon pinched in the middle a sphere concentric spheres a combination of spheres and dumbbells

Embryos of different species look very similar, which shows that the organisms share a ancestor.

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.