Plastic debris are a major source of marine pollution, endangering many marine mammals, birds and fish. Computer simulations are being used to analyze the redistribution and accumulation of this material. What factor, in addition to the mass, buoyancy and persistence of these materials, would be critical in studying their motion?

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .