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| Questão | Responda |
| what are the two main processes that make water drinkable | filtration and chlorination |
| what is desalination | the removal of salt from sea water so it can be used to drink |
| reverse osmosis is used for desalination, how is it used? | pressuret pushes the water through the membrane which allows small water molecules to get through and not salt. |
| what is one of the main problems with destination | 1)a lot of expensive energy has to be used for pressure 2)greenhouse gases |
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