Why did mrsir eat sunflower seeds from the book Holes by Louis Sachar?

In "Holes" by Louis Sachar, Mrs. Sir eats sunflower seeds as a way to cope with her frustrations and to pass the time while working at Camp Green Lake. The seeds serve as a habitual distraction, reflecting her character's need for comfort amidst the harsh conditions of the camp. Additionally, they symbolize a connection to the environment, as sunflowers thrive in the arid landscape of the camp.