How is a chameleon adapted to environmental conditions? How is a bear adapted to environmental conditions?

How is a chameleon adapted to environmental conditions? How is a bear adapted to environmental conditions? How are cactus and palm adapted to environmental conditions? How are a rabbit and a hare adapted to environmental conditions?

The chameleon is small in size and can change its color. The bear has a large coat, claws and impressive size. Palm trees have small leaves that evaporate quite a bit of water. Cacti have only thorns and retain a lot of moisture. Rabbits and hares have a small size, a well-developed musculoskeletal system, and they also have good and strong teeth. All animals have their own differences and adaptations to the environment. They acquire beneficial mutations by natural selection.