9880009
Descrição
Mapa Mental por douaa almahameed, atualizado more than 1 year ago
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Criado por douaa almahameed
quase 7 anos atrás
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Q1-Cleaning our drinking water?
- water that is soft for people to drink and to use for cooking washing and bathing.
- Q2-How is river water cleaned so that it is drinkable?
- 1-water is cleaned and purified before it is ready to drink.2-water
is cleaned and purified before it is ready to drink
- Q4-why is fluoride sometimes added to water ?who would benefit most?
- because fluoride is added to the water to help prevent tooth decay
- because fluoride is added to the water to help prevent tooth decay
- Q4-why is fluoride sometimes added to water ?who would benefit most?
- 1-water is cleaned and purified before it is ready to drink.2-water
is cleaned and purified before it is ready to drink
- Q3-how does reverse osmosis work?
- one way to desalinate sea water is reverse osmosis. this
method forces sea water through a membrane under
high pressure. the membrane acts like a strainer that
stops salt from passing through,but allows fresh water
to go through
- Q5-why should we clean water from a river before drinking it?
- because water has many chemicals
- because water has many chemicals
- Q5-why should we clean water from a river before drinking it?
- one way to desalinate sea water is reverse osmosis. this
method forces sea water through a membrane under
high pressure. the membrane acts like a strainer that
stops salt from passing through,but allows fresh water
to go through
- Q2-How is river water cleaned so that it is drinkable?
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