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Held in _________ for many years, the lion suffered from considerable distress.

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They have _________ and returned to sea more than 700 baby sea turtles this month.

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Polar bears are __________ to the effects of climate change, as the melting ice threatens their habitat.

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Conservationists monitor the area of __________ to assess the conservation status of various species.

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Some animal species have become _________ endangered due to habitat loss and illegal hunting.

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Overexploitation can be a big _________ to fish populations.

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Efforts to __________ endangered species involve breeding programs and habitat restoration.