Water resources - online puzzles

Water resources are natural resources of water that are potentially useful. Uses of water include agricultural, industrial, household, recreational and environmental activities. All living things require water to grow and reproduce.

97% of the water on the Earth is salt water and only three percent is fresh water ; slightly over two thirds of this is frozen in glaciers and polar ice caps. The remaining unfrozen freshwater is found mainly as groundwater, with only a small fraction present above ground or in the air.

Fresh water is a renewable resource, yet the world 's supply of groundwater is steadily decreasing, with depletion occurring most prominently in Asia, South America and North America, although it is still unclear how much natural renewal balances this usage, and whether ecosystems are threatened. The framework for allocating water resources to water users (where such a framework exists) is known as water rights.

tremiti islands puglia italy jigsaw puzzle onlineEilean Castle in Scotland online puzzlePanorama of Moscow, Russia jigsaw puzzle onlineFabulous Vietnam- flora and fauna online puzzleblue rocky stream jigsaw puzzle onlineWATER CYCLE online puzzleView to a mountain river in early spring online puzzlewaterfall at sunrise online puzzleOld city, channel jigsaw puzzle onlineAntarctic glacier jigsaw puzzle onlineRock cliff arch near Marinha beach in Portugal jigsaw puzzle onlineNorth and South America online puzzleSunrise over Hanauma Bay on Oahu, Hawaii jigsaw puzzle onlineSmall islet jigsaw puzzle onlineCavalier King takes a bath jigsaw puzzle onlineThailand, Koe Luang waterfall online puzzleRiver Wieprz online puzzlebay in Zakynthos jigsaw puzzle onlinePhi phi island in Thailand jigsaw puzzle onlineView jigsaw puzzle onlineLake Federa in Dolomites Alps online puzzleLandscapes jigsaw puzzle onlineScenic view of islands in Halong Bay, Vietnam, Sou jigsaw puzzle onlineFrom a series of landscapes jigsaw puzzle online
View online puzzleNew Zealand jigsaw puzzle onlineColorful landscape. jigsaw puzzle onlineFrom a series of landscapes jigsaw puzzle onlineSunset on the sandy beach in Boracay, Philippines jigsaw puzzle onlineFrom a series of landscapes jigsaw puzzle onlineGreen village jigsaw puzzle onlineChapel at the lake, Mountains jigsaw puzzle onlineRomantic place online puzzleView online puzzleWaterfall, river, stones online puzzleGermany - Ramsau in Bavaria online puzzleA motorboat around the islands online puzzleMostar, Bosnia jigsaw puzzle onlineBeautiful panorama jigsaw puzzle onlineRiver and water sports enthusiasts online puzzleSorvagsvatn lake, Vagar, Faroe Islands online puzzlestream streamer online puzzlelandscape online puzzlemountain stream online puzzleView jigsaw puzzle onlinewaterfall jigsaw puzzle onlineview from the villa on Lake Como online puzzleFrom a series of landscapes online puzzle