Iron can be in a soil.Logical formLearned from14 sentences. (Crop residue) can be on a (soil surface).Logical formLearned from14 sentences. Threats can be to soil.Logical formLearned from14 sentences. A soil may manifest hardness.Logical formLearned from14 sentences. A soil may be composed.Logical formLearned from14 sentences. Some controversies may concern the right of soil.Logical formLearned from14 sentences. Soil may undergo a sampling.Logical formLearned from14 sentences. Changes can be in (soil temperature).Logical formLearned from14 sentences. Soil may be made.Logical formLearned from14 sentences. Soils can be variable.Logical formLearned from14 sentences. Soils can be alkaline.Logical formLearned from14 sentences. (Desert soils) may pertain-to persons.Logical formLearned from14 sentences. A soil can be flat.Logical formLearned from14 sentences. Contamination can be in soils.Logical formLearned from14 sentences. A soil may undergo a disposal.Logical formLearned from14 sentences.