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II. This section presents some examples of statistics related to water. Try to choose the right comment to every picture

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1. Freshwater lakes and rivers contain an estimated 105 000 km3 or around 0.3 percent of the world’s freshwater.

2. Between 1991 and 2000 over 665,000 people died in 2,557 natural disasters of which 90 percent were water-related events.

3. The total volume of water on Earth is about 1.4 billion km3.

4. The volume of freshwater resources is around 35 million km3, or about 2.5 percent of the total volume.

5. Today 2.5 billion people, including almost one billion children, live without even basic sanitation.

6. World uses freshwater: about 70 percent for irrigation, about 22 percent for industry, about 8 percent for domestic use.

7. The daily drinking water requirement per person is 2-4 liters, but it takes 2 000 to 5 000 liters of water to produce one person’s daily food

8. Every day, 2 million tons of human wastes are disposed of in water courses.

9. Contribution of the food sector to the production of organic water pollutants: High income countries – 40 %, Low-income countries –
54 %.

10. In developing countries, 70 percent of industrial wastes are dumped untreated into waters where they pollute the usable water supply.

11. The Earth’s atmosphere contains approximately 13,000 km3 of water.

12. The total usable freshwater supply for ecosystems and humans is about 200 000 km3 of water – less than 1 percent of all freshwater resources.

13. Of these freshwater resources 70 percent is in the form of ice and permanent snow cover in mountainous regions, the Antarctic and Arctic regions. Around 30 percent of the world’s freshwater is stored underground.

14. Every 20 seconds a child dies from a water-related disease.

15. Investment in safe drinking water and sanitation contributes to economic growth. For each $1 invested, the World Health Organization (WHO) estimates returns of $ 3 – $ 34, depending on the region and technology.


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