is a type of ocean pollution that is frequently caused by nutrient runoff from agriculture and from disposal of livestock and human waste, leading to the artificial enrichment of waters with a previous low nutrient level.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.