If when the seasons change from summer to fall, the amount illumined by the sun will decrease, then what decreases when the season changes from summer to fall?

Answer choices:
- amount illumined by the sun
 - crime
 - exposure to cold
 - h2o
 - gravity
 - basic building blocks of life
 - a hemisphere is tilted away from the sun
 - wavelengths and photons

 

 amount illumined by the sun         