Although deserts do not receive a high amount of rainfall - to be classified as a desert , an area must get less than twenty- five centimeters of rainfall per year -there are many plants that thrive on only a small amount of water,, and deserts are often full of such plant life. Desert plants have a variety of mechanisms ; for obtaining the water needed for survival.. Some plants , such as cactus , are able to store large amounts of water in their leaves or stems;after a rainfall , these plants absorb a large supply of water to last until the next rainfall Other plants , such as the mesquite . have extraordinarily deep root systems that allow them to obtain water from far below the desert's arid surface. Which of the following most likely reflects the association between deserts and rainfall? A . Memory card:digital photographs B . Deep-sea ecosystems sunlight C . Clouds:water vapor D . Batteries:electrical energy E Refrigerator:perishable food items