Human Modification On Oceans
By Natalye Rivera
Runoff is precipitation that did not get absorbed into the soil, or didn't evaporate,and therefore made its way from the ground surface into places that water collect. Runoffs cause erosion ,and also carry chemicals and substances on the ground surface along the rivers where the water ends up. It can cause water pollution too.
An artificial reef is a human-made underwater structure ,typically built to promote marine life in areas with a generally featureless bottom, to control erosion, and block ship passage, or improve surfing.
An accidental release of oil into a body of water, as from a tanker, offshore drilling rig, or underwater pipeline, often presenting a hazard to marine life and the environment.