The statement is - True.
The regolith represents a big pile of material that has been deposited at the foot of a cliff. The material that is deposited can include anything from dust, broken pieces of rocks, or soil. It is a deposited layer that covers the solid rocks. It's age can vary a lot, and it can be instantaneous or hundreds of millions of years.
North korea withdrew from the NPT the Nuclear nonproliferation treaty
The polar ice capes, the change in genetics of certain animal fossils (growing more or less hair, etc. etc.)
Answer: Because more and more agriculture is one of the main "professions", where the use of water is extremely essential. Therefore, there is a great demand for it due to the scarcity that it has been having, since this is a renewable medium.
Explanation:
The fence built on the hill's slop over time will fall. It will not be a sudden process though, but slowly, the fence will bend over till it falls. This will be caused by the erosion, over time little by little the hill will be eroding because of the natural phenomenons like the wind and the rain (depending on the place where the hill is, maybe ice as well), so there will come a point where the basis of the fence that were once in the ground will be uncovered and there will be nothing to hold it, so it will fall.