Stress can be on an ecosystem.Logical formLearned from4 sentences. Threat can be to ecosystems.Logical formLearned from4 sentences. (Ecosystem services) may pertain-to persons.Logical formLearned from4 sentences. Ecosystems may pertain-to the past.Logical formLearned from4 sentences. Ecosystems can be robust.Logical formLearned from4 sentences. Some ecosystems may be considered.Logical formLearned from4 sentences. Ecosystems can be by a male.Logical formLearned from4 sentences. Habitats can be for ecosystems.Logical formLearned from4 sentences. Demands can be on ecosystems.Logical formLearned from4 sentences. An ecosystem can be precarious.Logical formLearned from4 sentences. Ecosystems can be fragile.Logical formLearned from4 sentences. A behavior may pertain-to an ecosystem.Logical formLearned from4 sentences. A (forest ecosystem) can be temperate.Logical formLearned from4 sentences. Ecosystems may shrink.Logical formLearned from4 sentences. Problems can be with an ecosystem.Logical formLearned from4 sentences.