Two substances were combined together and immediately a gas was produced. What type of change is happening? A. Chemical
B. Physical
C .Accidental
D. Electrical
(Please don't actually answer the question. Instead please give guided questions or hints. Thanks!)

there may be two cases .accidental change and also chemical change

A

Explanation:

This is called chemical reaction. Gas may form.

nucleus

would be most reasonable answer tbh

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