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The outcome is very different than our hypothesis question we were expecting a lot of negative chemical structure because the acid in a lot of water can affect the ecosystem on a big scale.

But the chemical structure does not affect the nearest river and it does not harm the animals.

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We see that the levels of the normal tap water before and after are a little bit above 7 with a average of 7,25 so it is considered okay but when we look at the pH of the natural water it is a 7.5 average, that is not what we expected but it is also a good thing because that show that the factories are producing by the rules and that is only a good thing.

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We see that the data of our different groups is not that far apart from each other group.

The pH from our before and after data is a little bit higher but the pH from the river is the highest in the Croatian group

We know for a fact that the water of normal tap water is sour and not healthy under the level of 7 and for natural water this is under the level of 6.

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We visited the ,,Jezioro Nyskie'' and we found out the pH value of water.

Reasults from Poland:
pH of the Jezioro Nyskie - 7.5
pH of the tap water - 7
pH of the sewage water - 7,0

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pH of the river - 7.55
pH of the tap water - 7.23
pH of the sewage water - 7.25

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They visited the "Istarska pivovara" and they found out the pH value of water.

Results from Croatia:

pH of the river Mirna - 7,61
pH of the tap water - 7,19
pH of the sewage water - 7,17

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The Croatian team is going to the nearest factory (Istarska pivovara), the Netherland team also and the Poland team is going to be the control group. We are going to take three examples of water: one that factory uses, one that factory lets out in the river and one example of water in river. We are going to measure the pH of the three examples. Then we are going to compare the resaults to see how much the factories affect on the quality of water.

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The water that factories uses is not polluted, but the water that they let out is polluted and is effecting the chemical structure of the river near the factories.

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Is the water that factories let out polluted and does the pollution effect the chemical structure of river near it?

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Group from The Netherlands:
Arda Arikan and Jay Wijngaarde

Group from Poland:
Zuzanna Brusiło and Ania Gawłowska

Group from Croatia:

Kristina Staraj, Adelina Muratagić and Lucia Fabijančić