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There is also some speculation that genetically-modified plants may leak chemical compounds into soil through their roots, possibly affecting communities of microorganisms. The chemical is also extremely resilient and can survive water treatment, enabling it to reach the ocean and destroy bacteria that form the base of the food chain. Depending on local conditions and on the focus of a water quality monitoring project, more chemical tests can be added. One might test for alkalinity or hardness, (including calcium, magnesium, etc.; field kits are available), chloride
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