پاورپوینت گردش آب و منابع آبی (pptx) 48 اسلاید

دسته بندی : پاورپوینت

نوع فایل : PowerPoint (.pptx) ( قابل ویرایش و آماده پرینت )

تعداد اسلاید: 48 اسلاید

قسمتی از متن PowerPoint (.pptx) :

In the name of God گردش آب و منابع آبی بیان مساله منابع آب گردش آب در طبیعت 80% of all illness in developing countries is caused by water related diseases. 90% of wastewater in developing countries is discharged directly into rivers and streams without treatment. Water Diseases استاندارد آب سالانه به ازاي هر نفرm32000 سرانه آب m31000-2000 در سال تنش آبي سرانه آب m3 500 در سال کمبود آب سرانه آب قابل تجديد جهان m3 7000 در سال ؟ The number of people with access to clean water has doubled in the last 20 years. 1.1 million people in the world still do not have access to safe water. This is nearly 20% of the population. Clean Water Do you leave the tap on when you clean your teeth? You waste 5 litres of water. You only need ¼ litre! Saving Water The UN estimates that by 2025, 75% of the world population won’t have reliable, clean water. Water Future