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In 2009, a group of researchers decided to go out into the Pacific Ocean to prove if the Great Pacific Garbage Patch was real or a myth. After days out on the sea, the research group came across hundreds of plastic pieces in the ocean that were seen as a soup of microplastics rather than large pieces of plastics as expected. [250]
Water quality guidelines for South Africa are grouped according to potential user types (e.g. domestic, industrial) in the 1996 Water Quality Guidelines. [59] Drinking water quality is subject to the South African National Standard (SANS) 241 Drinking Water Specification. [60]
United States 1960 postal stamp advocating water conservation. Water conservation aims to sustainably manage the natural resource of fresh water, protect the hydrosphere, and meet current and future human demand. Water conservation makes it possible to avoid water scarcity. It covers all the policies, strategies and activities to reach these aims.
Water is one of the agents of deterioration. Its effects can be seen in these flood-damaged library books. The 'ten agents of deterioration' are a conceptual framework developed by the Canadian Conservation Institute (CCI) used to categorise the major causes of change, loss or damage to cultural heritage objects (such as collections held by galleries, libraries, archives and museums). [1]
The 2018–2021 Southern Africa drought was a period of drought that took place in Southern Africa. The drought began in late October 2018, and negatively affected food security in the region. In mid-August 2019, the drought was classified as a level 2 Red-Class event by the Global Disaster Alert and Coordination System . [ 1 ]
Physical techniques of water/waste water treatment rely on physical phenomena to complete the removal process, rather than biological or chemical changes. [9] Most common physical techniques are: Sedimentation is one of the most important main wastewater treatment procedures. Gravity settling is a method of separating particles from a fluid.
Marine conservation is included in the United Nations framework of Sustainable Development Goals (SDGs), most notably in SDG 14 ("Life below water"). The text of Target 14.5 is: "By 2020, conserve at least 10 per cent of coastal and marine areas, consistent with national and international law and based on the best available scientific ...
MTBE spreads more easily underground than other gasoline components due to its higher solubility in water. [1] Cost estimates for removing MTBE from groundwater and contaminated soil range from $1 billion [ 2 ] to $30 billion, [ 3 ] including removing the compound from aquifers and municipal water supplies, and replacing leaky underground oil ...