The study looked at how a plant called Kelimeris integrifolia grows in different seasons on grasslands in China. They found that the plant's photosynthesis and water use change throughout the day, with two peaks in activity. The amount of sunlight, air humidity, and how open the plant's pores are all affect how well it can make food and use water. Sunlight is the most important factor, followed by how open the plant's pores are. The plant's temperature and how dry the air is also play a role in how it uses water.