How is beam spreading related to seasons on earth ?

When the part of Earth is tipped toward the Sun in summer, there will be less beam spreading of the Sun's light in the area tipped toward the Sun. This means there will be a higher concentration of light energy and higher temperatures.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.