it stores water
Leaves have evolved into spines on the cactus.
By evolution
no,there would be little change because the cactus wont be able to adapt to the environment.
In a desert, they adapt so that they are able to hold in and store more water. For example, there is a cactus.
A cactus
Because all cactus have large sacks in them like camels that hold water. >:{D
A cactus that has flowers is giving the flowers fluids from within. A cactus is like a camel except with many more chambers. The cactus stores moisture for long periods of time.
it may or may not depending on speices.
A cactus adapts to its environment by losing its spines to reduce water loss and protect itself from animals.
Cacti grow naturally only in the Americas, not on the African savanna.
Cactus
Plants are not intelligent, and are not capable of learning.