When a cold air mass replaces a warm air mass, it's called an) front.
A. Stationary
B. Warm
C. Occluded
D. Cold

Cold Front

Explanation:

Cold air mass replaces a Warm air mass, This will be a cold front.

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

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