Extras
How Saguaro Cacti Store 1000 Gallons of Water
The saguaro features a pleated surface which allows it to expand.
How Saguaro Cacti Store 1000 Gallons of Water
The Plant that Makes Its Home on a Cactus
Tristerix seeds travel in bird droppings to invade the bodies of giant cactus.
The Plant that Makes Its Home on a Cactus
Why Elephants Eat the Baobab Tree
The baobab stores thousands of gallons of water in its spongy wood.