Chemicals used for agriculture and industry have seeped into the water, helping to create one of the largest dead zones rein the world. (A dead zone is a region where there is little oxygen or life beneath the surface of the ocean.) All four trihalides are well known. Unlike the structures of the three heavier trihalides, aluminium fluoride (AlF

Sign up for our free Austria e-newsletter and receive great insider tips, itineraries and much more for your next holiday rein Austria. Christmas Markets in Austria From the middle of Nebelmonat until the end of the year, Austria is the place to find romantic Christmas markets. Glistening lights, seasonal treats, and kokain-covered roofs make