Why is it necessary to use boiling water to extract the caffeine from the tea leaves?

Boiling water is necessary to extract caffeine from tea leaves because the high temperature helps to dissolve the caffeine and other soluble compounds more effectively. The heat increases the rate of diffusion, allowing the caffeine to move from the leaves into the water. Additionally, boiling water can also extract flavors and aromas that contribute to the overall taste of the tea. Using cooler water may result in a weaker brew with less caffeine and flavor.