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Natalia Bryja

Klaudia Drobek

Oliwia Kwiatkovska

Semanur Kavuk

Annissa Zoundri

Nikolina Tadić

Job Peteh Ivaniš

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                                                        Conclusion

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                                                        Conclusion

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Where as all three countries have similar amounts of iron in drinking water, our hypothesis was wrong because there is no much difference  in quality of waters in our countries.
The amount of all three countries is good and we can say now that Netherlands, Croatia and Poland have water that is safe for drink and there are all equally good.

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The amount of iron in drinking water in all three countries is very small, about 0,1 mg/l  which is under permissible level (0,3 mg/l).

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                                                                    Hypothesis

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                                                                    Hypothesis

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With knowing of GDP per capita for each country we can know how  much one country is  developed and our conclusion is that Netherlands, which is the most developed country has the least amount of iron in drinking water because it has the best water system. The second country is Poland because it is less  developed country than Netherlands, but more developed than Croatia which, as we think, has the highest amount of iron in drinking water because it is the least developed

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Searching for literature

Finding and analyzing of literature

Doing experiments and tests

Analyzing of given results

Conclusion

Presentation of the project

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                                                   Research question

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                                                   Research question

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Is it higher amount of iron in drinking   water in  less developed countries than in                              more developed?