Marine ecosystems may undergo a degradation.Logical formLearned from10 sentences. Ecosystem reserve).Logical formLearned from10 sentences. (Forest ecosystems) can be intact.Logical formLearned from10 sentences. A remnant may pertain-to an ecosystem.Logical formLearned from10 sentences. A heart may pertain-to an ecosystem.Logical formLearned from10 sentences. Players can be in an ecosystem.Logical formLearned from10 sentences. Organisms can be in an ecosystem.Logical formLearned from10 sentences. An ecosystem can be affected.Logical formLearned from10 sentences. A recovery may pertain-to an ecosystem.Logical formLearned from10 sentences. Marine ecosystems may unravel.Logical formLearned from10 sentences. Ecosystems may be protected.Logical formLearned from10 sentences. Ecosystems can be interdependent.Logical formLearned from10 sentences. An ecosystem may fall.Logical formLearned from10 sentences. Ecosystems can be dominated.Logical formLearned from10 sentences. Pressures can be on an ecosystem.Logical formLearned from10 sentences.