Fact 1: The Earth being tilted on its rotating axis causes seasons. Fact 2: Latitude and season cause temperature variations. Given the two facts above, answer the question "What causes yearly temperature variations?" with the following options: - earth's rotation - scattered light - earth's bend on rotating axis - exposure to cold - depress neuronal excitability - earth's tilt on rotating axis - wind and erosion - earth's tilt on rotating half
earth's tilt on rotating axis