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 sphincter muscles at the end of the digestive tract is the anus.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do