Identify each of the following statements as being most similar to a hypothesis, a law, or a theory. Explain your reasoning. a) Falling barometric pressure precedes the onset of bad weather.

b) All life on earth has evolved from a common, primitive organism through the process of natural selection.

c) My truck’s gas mileage has dropped significantly, probably because it’s due for a tune-up.

Two changes are described below. a green banana turns yellow and ripens. a layer of rust forms on an iron nail. which statement is true about the two changes? a) both are chemical changes because new substances are formed. b) both are physical changes because only the physical state of the substances change. c) a is a physical change due to a change of state, but b is a chemical change because new molecules are formed. d) a is a chemical change due to a change of state, but b is a physical change because new molecules are formed.