How does mimosa predict the weather?

Mimosa is a very interesting plant. As long as we gently touch the mimosa with our hands, it will close shyly and return to its original state after a while. This function is like a "weatherman" predicting the weather.

When the sky is clear and the air is dry, its closing ability is much stronger than its diffusion ability. At this time, if you touch it with your hands, the leaves will shrink and droop quickly, and it will take a long time to recover, indicating that the air is dry and the humidity is low, and the weather will continue to be sunny; On the contrary, if it is about to rain, mimosa will be affected by humidity, and its recovery speed will be faster than that of enclosure. At this time, if we touch it, the mimosa will slowly shrink and close, droop slowly, and even reopen after a little closing, which indicates that the air humidity is high, and the weather will turn from sunny to cloudy or it will rain soon.