A hole in the ground
I think you mean what gets bigger the more you take away from it, the answer is a hole
A hole.
A hole gets bigger when you take more away.
A hole. A hole. A bank overdraft gets bigger as you withdraw more funds from it. John McCain's left cheek. Yup. Hole is the 'it'. And what about right cheek?
Hole
A hole.
it creates more oxygen and can be homes for more wildlife
Debt
A hole in the ground.
The answer to the riddle is a "hole." The more you take away from a hole, the larger it becomes, while the less you take away, the smaller it gets. This paradoxical nature of a hole makes it an interesting concept in riddles.
Fire.
When the numerator gets bigger, the fraction gets bigger; that is, it has a greater value The opposite is true if the denominator gets bigger; in this case the the fraction gets smaller; that is, it has a lesser value