(Water ecosystems) may undergo protection.Logical formLearned from6 sentences. Ecosystems may suffer.Logical formLearned from6 sentences. An ecosystem may pertain-to a mountain.Logical formLearned from6 sentences. An ecosystem may pertain-to today.Logical formLearned from6 sentences. An ecosystem may undergo an alteration.Logical formLearned from6 sentences. Ecosystems can be small-scale.Logical formLearned from6 sentences. An ecosystem can be a habitat.Logical formLearned from6 sentences. (Forest ecosystems) may undergo importance.Logical formLearned from6 sentences. Importance can be in ecosystems.Logical formLearned from6 sentences. An ecosystem can be dominated.Logical formLearned from6 sentences. An ecosystem may be based.Logical formLearned from6 sentences. A natural balance may pertain-to ecosystems.Logical formLearned from6 sentences. An ecosystem can be long-term.Logical formLearned from6 sentences. Some ecosystems can be in a country.Logical formLearned from6 sentences. A (forest ecosystem management) can be sustainable.Logical formLearned from6 sentences.