Fact 1: When the season changes , the amount of daylight will change.

Fact 2: Daylight hours are at a maximum, and summer begins.

Given the two facts above, answer the question "What happens when the season changes?" with the following options: 
- degrees Celsius
 - colder weather
 - The bending of a ray of light
 - Plant growth is reduced
 - the amount of hours changes
 - Warm air moving into cold air
 - a tree falling
 - cloudy and rainy weather


 

     the amount of hours changes    