Final answer:
The author believes that the loss of plant species and habitats will devastate animals and hinder human progress.
Step-by-step explanation:
The author of the excerpt believes that the loss of plant species and habitats will devastate animals and hinder human progress. The author emphasizes that the disappearance of species will lead to the loss of scientific information, destruction of biological wealth, and the missed opportunity to discover new medicines, crops, and other valuable resources.
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