Lactic acid may lower a ph.Logical formLearned from3 sentences. Ferns can be indifferent to (soil ph).Logical formLearned from3 sentences. (Soil ph) can be critical.Logical formLearned from3 sentences. Phs may undergo an implication.Logical formLearned from3 sentences. Phs may fall on a face.Logical formLearned from3 sentences. An implication of phs can be that something-is-the-case.Logical formLearned from3 sentences. (Ph levels) may rise.Logical formLearned from3 sentences. (Copper smelting) may change a ph of water.Logical formLearned from3 sentences. A reduction can be in a ph.Logical formLearned from3 sentences. Changes can be in (ocean ph).Logical formLearned from3 sentences. A horse may pertain-to ph.Logical formLearned from3 sentences. Medias can be with ph.Logical formLearned from3 sentences. Compost may have a ph.Logical formLearned from3 sentences. Persons may seek a ph.Logical formLearned from3 sentences. Phs may pertain-to water.Logical formLearned from3 sentences.