The spines and thick waxy cuticle on a cactus are both?
Answers: I think it is structural adaptations.
Most of the cactus and all the succulents need plenty of daylight. Do not try to grow cactuses on the northern side of your home, the sunshine places are ideal for cacti. Place your cacti as close to the window as possible, even on the window sill and your sunshine in your balcony. However, you need to protect the cactuses directly from the noon sun.