Possible answers: I. kinetic energy; II. negative; III. visible energy; IV. harmful substances; V. perpendicular; VI. heat energy; VII. direct energy; VIII. reflecting light;
Given those answer options, answer the question: Fact 1: Temperature falls from the equator to the poles. Fact 2: Sun's rays are perpendicular to the equator. Given the two facts above, temperatures fall towards the poles as the sun's rays are no longer what?
A:
V.