Generate a sentence that answers this question: "Sunlight is a source of light from what?".

Answer: when the season changes , the amount of daylight will change

Generate a sentence that answers this question: "air masses are pushed by westerlies but stopped by".

Answer: jet streams may deflect the air masses moved by the prevailing westerlies

Generate a sentence that answers this question: "What might damage a hard walkway that runs alongside a street?".

Answer:
if a tree is located near a sidewalk then the roots of that tree might crack the sidewalk