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Naddika [18.5K]
3 years ago
15

What effect do calcium ions have on the water in ecosystems?

Biology
2 answers:
Misha Larkins [42]3 years ago
7 0
I believe it is C.They add to its hardness.
nignag [31]3 years ago
7 0

Answer:

They add to its hardness (Apex)

Explanation:

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