kylaadams20ovibc4 kylaadams20ovibc4

13-11-2017
Chemistry

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What effect to calcium ions have on the water in ecosystems?
A. they add to its hardness
B. they increase its acidity
C. they reduce its pH
D. they decrease its salinity

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saurabhsinh126ozb33z saurabhsinh126ozb33z

13-11-2017

they add to its hardness

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