1. By Tobias Holm and Tony Figueroa

2.  Male bucks fight with their antlers to mate with the female doe.

3.  Snakes mate for a short time to lay eggs.

4.  Male bucks fight with their antlers to mate with the female doe.  Snakes mate for a short time to lay eggs.  Some species of birds will test the males’ craftsmanship by making a makeshift nest.

5.  Bears hibernate in the winter to stay warm.

6.  Ptarmigans shed their feathers from brown to white to camouflage in the snow.

7.  Bears hibernate in the winter to stay warm.  Ptarmigans shed their feathers from brown to white to camouflage in the snow.

8.  Bears hibernate in the winter to stay warm.  Ptarmigans shed their feathers from brown to white to camouflage in the snow.

9.  Bears hibernate in the winter to stay warm.  Ptarmigans shed their feathers from brown to white to camouflage in the snow.  Conifers are cone shaped, so the snow slides off their branches.

10.  Bears hibernate in the winter to stay warm.  Ptarmigans shed their feathers from brown to white to camouflage in the snow.  Conifers are cone shaped, so the snow slides off their branches.

11.  Cacti have thick spikes covering them, so nothing eats them.

13.  Chameleons camouflage to hide from predators.

14.  Cacti have thick spikes covering them, so nothing eats them.  Chameleons camouflage to hide from predators.  Zebras have stripes to confuse predators

15.  Peregrine falcons dive bomb their prey, mainly smaller birds.

16.  Lions stalk zebras in the tall grasses of Africa.

17.  Peregrine falcons dive bomb their prey, mainly smaller birds.  Lions stalk zebras in the tall grasses of Africa.  Venus flytraps kill flies and bees by luring them in with sweet nectar, and devour them with deadly acids.

18. For these reasons, adaptations are vital for living organisms’ survival.