External stimulus. The rain is something out of your control while you're waiting. Rain is not something you are doing nor is it a response to you waiting for the bus.
Answer:
Ionic Bond
Explanation:
It is one of the main types of chemical bonds in chemistry. Ionic bonds are caused by electrons transferring from one atom to another.
Answer:
BELIEVE IN UR SELF ALL THAT U ARE .
GOOD AFTERNOON
JUST STUDYING
