Question

how can the oil spills of rivers and ocean be cleaned

Answer 1

These oils will float in either a river or the ocean. But very heavy oils, which have a density of 1.01 g/cc, wouldfloat in the ocean, but sink in a river. Sometimes the density of an oil is so close to that of river water that the oilmoves along the river partly underwater.

Answer 2

they can be cleaned by filtration by electric funnel or by oil seeker machine!!