There are over 2000 species of cactus. Surface of many cacti expand during rain to store more water and shrink during day time as it uses the water it has stored. Read more about them at: Cactus Plants Page
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There are over 2000 species of cactus. Surface of many cacti expand during rain to store more water and shrink during day time as it uses the water it has stored. Read more about them at: Cactus Plants Page