Answer:
A grocery bill.
Explanation:
Well for most people they spend different amounts of money on groceries allowing it to be different each time.
NAME ME THE BRAINLIEST !
When fresh water and saltwater meet<span> in an estuary, they do not always mix very readily. Because </span>fresh water<span> flowing into the estuary is less salty and less dense than water from the ocean, it often floats on top of the heavier </span>seawater<span>.</span>