Role can be in ecosystem.Logical formLearned from7 sentences. Knowledge may pertain-to ecosystems.Logical formLearned from7 sentences. Changes can be in a marine ecosystem.Logical formLearned from7 sentences. Ecosystems can be in areas.Logical formLearned from7 sentences. An imbalance can be in an ecosystem.Logical formLearned from7 sentences. An ecosystem may pertain-to a waterway.Logical formLearned from7 sentences. An ecosystem may pertain-to a coast.Logical formLearned from7 sentences. Ecosystems may deteriorate.Logical formLearned from7 sentences. A disaster can be for an ecosystem.Logical formLearned from7 sentences. A (marshland ecosystem) can be delicate.Logical formLearned from7 sentences. Some acres may encompass a (desert ecosystem).Logical formLearned from7 sentences. An ecosystem may be populated by species.Logical formLearned from7 sentences. Points may damage ecosystems.Logical formLearned from7 sentences. Consequences can be for ecosystems.Logical formLearned from7 sentences. An ecosystem can be in danger.Logical formLearned from6 sentences.