Cacti
Cacti are in the succulent family. Cacti are native to North and South America and also the West Indies. All species of cacti live in North and South America and the West Indies, but only one species lives other places.
The tallest cactus was a Pachycereus cactus which was 19.2 meters tall! The smallest fully-grown cactus was a Blossfeldig one which was only one cm in diameter! A cactus that is 12 cm high could have roots two meters in diameter.
Cacti have a short growing period. If a cactus seed is in rain for just two hours, it will already have a root system by the time the rain stops. When it rains a cactus will store water. They absorb water through thorns and they can also absorb fog. The stem of a cactus will store the water. They have a waxy coat like a rain jacket to keep water from evaporating.
Some species of cacti make it so only certain animals can pollinate them. An example is one species has a long tube leading to the blossom, therefor only moths can pollinate. Others bloom at night to attract moths and bats. Cacti get pollinated by bats, moths, insects, bees, and even hummingbirds.
Cacti like hot dry places and we have been to many and seen cacti in South America. I hope to see the penguin cactus in Antarctica 
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