تلوث الماء بالانجليزي

تعبير انجليزي عن الماء

اهمية الماء بالانجليزي مترجم

تعبير عن الماء بالانجليزي قصير وسهل

بحث عن الماء بالانجليزي

موضوع عن الماء بالانجليزي طويل

فوائد الماء بالانجليزي قصير

موضوع عن الماء قصير

تعبير عن الماء بالانجليزي ثالث ثانوي

عبارات عن الماء بالانجليزي

water pollution

water pollution can take different forms: chemical, but also biobacteriological and bacteriological, thermal, and the waters or bodies of water concerned can be soft, brackish or salty, underground or superficial. It can even be rain or dew, snow or polar ice.

It can also concern interfaces, including estuaries, wetlands and in particular their sediments, which can absorb and then release certain pollutants. The sediments can be highly polluted and keep traces of old pollution (sometimes there are also many lead shots and fishing where these activities are practiced).

The fight against this pollution is even more difficult than what is at the bottom of the water, or diluted in water is often invisible, and that some toxic infiltrated into the soil often produce their effect after a long time. delay and that many pollutants act in complex synergies. An accidental spill of 4,000 liters of tetrachloromethane, which occurred near Erstein in 1970 and went almost unnoticed at the time, resulted twenty years later in the contamination of the water table and a well dug seven kilometers downstream. Nitrates can reach certain nests after several decades.

In Europe, Directive 2000/60 / EC of 23 October 2000 [1] is the framework for the water sector. It recalls and reinforces the Community guidelines on the good state of aquatic ecosystems. Its Article 16 aims to strengthen the protection of the aquatic environment through specific measures designed to progressively reduce the discharges, emissions and losses of priority substances, and the phasing out or phasing out of the discharges, emissions and losses of priority hazardous substances in Water States must decline this directive in their national law.