Currently, what is a major source of ocean pollution? How much more pollution is occurring compared to 1960?
plz help. need this answered 4 science.

Most ocean pollution begins on land.

Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land. One of the biggest sources is called nonpoint source pollution, which occurs as a result of runoff.

the answer is cell division : )

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.