The massive ship is anchored in Stokes Bay in the Solent because it is too big to sail into Portsmouth Harbour. We have a look at the world's ten biggest and most powerful aircraft carriers. Above: Nimitz Class aircraft carrier USS Theodore Roosevelt as she departed Naval Station Norfolk, Virginia. Nimitz Class, with a full load displacement of 97,000 tonnes, is the world's largest aircraft carrier. The first carrier in the class was deployed in May 1975, while the tenth and last ship, USS George H.W. Bush (CVN 77), was commissioned in January 2009.
Groundwater pollution differs from surface water contamination in several important respects. Among them, it does not typically flow to a single outlet. It can affect people through wells dug in a contaminated aquifer, as it can flow into streams or lakes.
Water that is high up on a mountain can turn into snow easily. This will take a longer time to melt than it if were in liquid form. Water that goes under the ground into aquifers will take an especially long time to evaporate, since it is trapped underground until it is pulled up by someone. However, a drop of water in a body of water may evaporate and form rain within only a few days.