Use the diagram below to help you answer the following questions. *Note that in the images below changes in eccentricity are exaggerated so the effect can be seen in the images. Earth's orbit shape varies between 0.0034 (almost a perfect circle) to 0.058 (slightly elliptical).*

a. A change in the eccentricity of Earth's orbit towards its maximum will increase or decrease the solar input that the Earth receives?

b. Explain how an increase in the eccentricity of the Earth’s orbit will alter the climate.