A (ph level) may help.Logical formLearned from4 sentences. Soil may have a ph.Logical formLearned from4 sentences. (Soil ph) may undergo determination.Logical formLearned from4 sentences. Increases can be in (soil ph).Logical formLearned from4 sentences. A decrease can be in (cell ph).Logical formLearned from4 sentences. An effect can be on (soil ph).Logical formLearned from4 sentences. A function can be constituted-of-or-filled-with (solution ph).Logical formLearned from4 sentences. Ph may undergo a reduction.Logical formLearned from4 sentences. Tolerance can be to ph.Logical formLearned from4 sentences. A ph may pertain-to a (water supply).Logical formLearned from4 sentences. A ph can be fixed.Logical formLearned from4 sentences. Phs can be constituted-of-or-filled-with solution.Logical formLearned from4 sentences. A ph can be unknown.Logical formLearned from4 sentences. A ph may read.Logical formLearned from4 sentences. Phs can be altered.Logical formLearned from4 sentences.