Rain washing oily runoff from a road into a river that runs alongside the road is an example of point source pollution or nonpoint source pollution?

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

food source and hunting?