Sentences with phrase «dead zones occur»

Dead zones occur throughout the world and persist through the summer until plunging water temperatures — and often hurricanes — mix oxygen back into the depths each fall.

When a large enough region develops hypoxia, a dead zone occurs.

The two largest of these dead zones occurred in 2002 and 2006.

Not exact matches

Most of the time dead zones or lulls in our sales occur because of inactivity.

Although oxygen depletion occurs naturally in some parts of the ocean, such as fjords and deep basins, the Gulf of Mexico's dead zone is caused by humans.