Some branches can be extinct.Logical formLearned from4 sentences. Cod can be extinct.Logical formLearned from4 sentences. Trees can be extinct.Logical formLearned from4 sentences. Crocodiles can be extinct.Logical formLearned from4 sentences. A strain can be extinct.Logical formLearned from4 sentences. A dog can be extinct.Logical formLearned from4 sentences. An elephant can be extinct.Logical formLearned from4 sentences. Gymnosperms can be extinct.Logical formLearned from4 sentences. A mixed language can be extinct.Logical formLearned from4 sentences. Languages may go extinct.Logical formLearned from4 sentences. Some lines can be extinct.Logical formLearned from4 sentences. A system can be extinct.Logical formLearned from4 sentences. Volcanism can be extinct.Logical formLearned from4 sentences. A pink-headed duck can be extinct.Logical formLearned from4 sentences. A population may be considered extinct.Logical formLearned from4 sentences.