How is a deer adapted to live in grasslands?

Deer have following adaptations to live in grasslands:
(a) They have strong teeth for chewing stems of hard plants that are found in forests and grasslands.
(b) They have long ears to hear the movements of predators.
(c) Their eyes are located on the side of the head to enable them to look in all directions for danger.
(d) They run very fast which enables them to run away from predators.