The greenhouse effect is essential in order for the Earth to be able to sustain
life.
True
O False

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements