What is the primary cause of rain?
The primary cause of rain is when water condenses in a cloud and gets heavy enough to fall.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is the primary cause of rain?
### Input: 
### Response: The primary cause of rain is when water condenses in a cloud and gets heavy enough to fall.