Water, Water, Everywhere...

Water, Water, Everywhere...

20 things you should know about water:

1. H20 is the chemical symbol for water. Each molecule of water contains two atoms of hydrogen (H) joined to a single atom of oxygen (O)
2. As a resource, water is renewable and made available at all times through solar energy, enabling it to evaporate from oceans and land, before redistributing it around the world.
3. Water is the only substance found on earth in three forms: liquid, gas and solid. Frozen water is 9% lighter than its liquid form. Hence, ice floats on water.
4. More than 70% of the earth's surface is covered by water. Of this water, 97% is in oceans, which makes it salty and undrinkable. The remaining 3% is freshwater. Only 0.3% is found in rivers and lakes; the rest is frozen.
5. The three largest water uses are for: Agriculture, 67%; industry, 19%; and municipal/residential, 9%.
6. Over 100 years, a water molecule would have spent some 98 years in the ocean, 20 months as ice, about 2 weeks in lakes and rivers, and less than a week in the atmosphere.
7. The rivers in Asia are the most polluted in the world, containing three times as many human bacteria than the global average, and 20 times more lead than rivers in industrialised countries.
8. Two-thirds of the human body is water. Human bones are 25% water.
9. Humans can go a month without food but will die after one week without water.
10. Water leaves the human body five minutes after consumption, when you breathe out water vapour, perspire, or go to the loo.
11. The World Health Organisation estimates that a person needs 19 litres of water to meet his daily need including drinking, showering and cleaning.
12. Water makes up 75% of an average chicken and 80% of an elephant.
13. On average, frontloading washing machines use 80 litres, and top loading machines use 170 litres of water per wash.
14. Washing a mug under a running tap uses about a litre of water.
15. About 9 litres of water is used to flush the toilet. You save about 4 litres if you use a half-flush.
16. To produce a fast-food lunch of a hamburger, french fries, and a soft drink, about 6,800 litres of water is needed. The water is for growing the spuds, the grain for the bun and the cattle feed, as well as for producing the drink.
17. According to the UK Environment Agency, one drip per second wastes around 1,200 litres of water in a year; that's around 3 litres a day; and 90 litres of water if the drips break into a stream.
18. Water can tell you how fresh an egg is. A good egg sinks, a stale one won't.
19. An elephant's trunk can hold 11 litres of water.
20. A full-grown tree - 20m high, with 600,000 leaves and a tree top diameter of 12m - will produce about 400 litres of water in evaporation a day.

Interesting ehh, No.20 is related to me!! I meant my course, HLM. WAHAHAH!! -___-''