The early ancestors of the horse (shown in the picture) were adapted to life in tropical forests. gradually the forests disappeared and were replaced with open grasslands. because of the gradual change in habitat, modern horses

C) Are taller with long legs and are capable of great speed to escape predators

the areas around the equator

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms