Volcanic activity can be by a rise of mid-ocean ridges.Logical formLearned from2 sentences. (Bucket seats) may need (support ridges).Logical formLearned from2 sentences. Persons may walk a (ridge line).Logical formLearned from2 sentences. A ridge of high pressure may promote dry weather.Logical formLearned from2 sentences. A (desert ridge) can be barren.Logical formLearned from2 sentences. A ridge can be constituted-of-or-filled-with (iron ore).Logical formLearned from2 sentences. Ridges can be on a side.Logical formLearned from2 sentences. A drive can be across (ridge tops).Logical formLearned from2 sentences. Skin can be with some ridges.Logical formLearned from2 sentences. (Charter schools) may tiptoe on a ridge.Logical formLearned from2 sentences. A ridge can be above a (license plate).Logical formLearned from2 sentences. The ground can be on a ridge.Logical formLearned from2 sentences. Artillery may be positioned in oppossing (mountain ridges).Logical formLearned from2 sentences. A ridge can be constituted-of-or-filled-with air.Logical formLearned from2 sentences. A post may look over a pair of ridges.Logical formLearned from2 sentences.