4 If your vision problems can be
corrected by a convex lens, you:
A Have trouble seeing nearby objects
B
Have trouble seeing faraway objects
C Have trouble telling whether objects are close up
D
Have blind spots at the edges of your vision

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