A standard electrical plug fits into an outlet in only one way because one of the two prongs is larger than the other. This ensures that people will insert the plug properly to create a grounded circuit. This is an example of:

Which statements best describe energy? check all that apply. the total amount of energy in the universe remains constant. the total amount of energy in the universe changes constantly. energy cannot be converted from one form to another. energy can be converted from one form to another. energy cannot be created or destroyed. energy can be created or destroyed.