lesson 1 : what causes weather lesson 2:what conditions affect the water cycle lesson3:how can patterns in weather be observed vocabular preview lesson 1, 2 and 3. atmosphere. the blanket of air surrounding earth.
- If you work in an airconditioned environment and follow a sedentary lifestyle, do not drink more than 2 to 2.5 litres of water per day. - For moderate workers, for instance salespersons, it is important to drink around three litres of water.
Since then, The British Dietetic Association has declared that an average adult should drink 10.5 cups of water per day. Also, the Journal of the American Dietetic Association says the average sedentary man should drink 12 glasses of water a day, and the average sedentary woman 9 glasses per day. The truth is water is an essential nutrient for life.