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According to the textbook,the most effective research proposals:
Endangered Species
Organisms that are at risk of extinction due to drastic decreases in their population numbers or habitats.
Threatened Species
Species that are at risk of becoming endangered in the near future if conditions threatening their survival and reproduction do not improve.
Extinct Species
Species that have become extinct, ceasing to exist entirely.
Endangered Species
Species that are in danger of extinction throughout all or a significant portion of their range due to various factors like habitat loss, poaching, and climate change.
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