Final answer:
The loss of plant species and habitats will devastate animals and hinder human progress.
Step-by-step explanation:
The author's beliefs about the disappearing species, based on the excerpt, can be summarized as follows: the loss of plant species and habitats will devastate animals and hinder human progress. The author mentions that as forests are destroyed, the decline of species will accelerate, and extinction rates are already higher than before the coming of humans. The author also emphasizes that the loss of species will result in the destruction of potential biological wealth, medicines, crops, and other valuable resources.
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