(Ammonia producers) may pertain-to a us-state.Logical formLearned from2 sentences. A product can be an anhydrous ammonia.Logical formLearned from2 sentences. Some percent can be constituted-of-or-filled-with (ammonia imports).Logical formLearned from2 sentences. Nitrogen can be from ammonia.Logical formLearned from2 sentences. Nitrogen can be to ammonia.Logical formLearned from2 sentences. Synthesis can be from ammonia.Logical formLearned from2 sentences. A drop can be in ammonia.Logical formLearned from2 sentences. Bacteria may convert nitrogen to ammonia.Logical formLearned from2 sentences. Ammonia may be converted to urea.Logical formLearned from2 sentences. Ammonia may undergo an entrance.Logical formLearned from2 sentences. Emission can be from (ammonia molecules).Logical formLearned from2 sentences. (Nitrogenase activity) may inhibit by concentrations of ammonia.Logical formLearned from2 sentences. Ammonia can be reactive.Logical formLearned from2 sentences. (Ammonia measurements) may disagree with standards.Logical formLearned from2 sentences. Difficulties can be in measurring ammonia.Logical formLearned from2 sentences.