A plain may be break_uped by ridges.Logical formLearned from2 sentences. A range can be constituted-of-or-filled-with low ridges.Logical formLearned from2 sentences. Ridges may dissolve.Logical formLearned from2 sentences. Ridges can be between sinkholes.Logical formLearned from2 sentences. Ridges may remain as (landscape features).Logical formLearned from2 sentences. Ridges may be formed by streambeds.Logical formLearned from2 sentences. Features may include ridges.Logical formLearned from2 sentences. Upwelling may be associated with mid-ocean ridges.Logical formLearned from2 sentences. Low ridges can be to a northwest of town.Logical formLearned from2 sentences. Ridges may be left.Logical formLearned from2 sentences. A (land mass) may consist of (mountain ridges).Logical formLearned from2 sentences. A mouth can be with (tooth ridges).Logical formLearned from2 sentences. Ridges can be for teeth.Logical formLearned from2 sentences. Ridges may undergo extensions.Logical formLearned from2 sentences. Ridges may undergo an elongation.Logical formLearned from2 sentences.