Final answer:
The author believes that the disappearing species will devastate animals and hinder human progress.
Step-by-step explanation:
The author's beliefs about the disappearing species are that it will devastate animals and hinder human progress. The excerpt mentions that as forests are destroyed, the decline of species will accelerate even more. The author also states that the loss of plant species and habitats will result in the destruction of potential biological wealth, undeveloped medicines, crops, and other products and amenities.
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