Answer:
aquifer
Explanation:
Most aquifers contain water saturated layers of rock or loose sediment. Aquifers have within them water- filled caves.
The contour interval is the distance between planes.
I don't have enough information to give a correct answer
The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface.
Brainly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!