Artery is to arteriole as
a. bronchi is to bronchioles.
b. venules is to veins.
c. bronchi is to trachea.
d. alveoli is to lungs.

cats appear to have glowing cat eyes because the back of their eyeballs includes a special reflective surface called the tapetum lucidum. this lets them see better during the night, giving them a much better vision.

they deliver oxygen to the blood

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