An aquatic ecosystem can be clean.Logical formLearned from2 sentences. An aquatic ecosystem can be with a biological community.Logical formLearned from2 sentences. A (riparian ecosystem) may pertain-to a river.Logical formLearned from2 sentences. Ecosystems may undergo a definition.Logical formLearned from2 sentences. (Ecosystem functions) can be vital.Logical formLearned from2 sentences. A link can be in ecosystems.Logical formLearned from2 sentences. A (river ecosystem) can be viable.Logical formLearned from2 sentences. Aquatic ecosystems may undergo protection.Logical formLearned from2 sentences. Ecosystems may be provided.Logical formLearned from2 sentences. Effects can be on a marine ecosystem.Logical formLearned from2 sentences. Birds can be components of ecosystems.Logical formLearned from2 sentences. Conditions can be constituted-of-or-filled-with (water ecosystems).Logical formLearned from2 sentences. Ecosystems may undergo a ranking.Logical formLearned from2 sentences. Ecosystems can be for birds.Logical formLearned from2 sentences. Ecosystem can be around the world.Logical formLearned from2 sentences.