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 can best be summarized as follows: the loss of plant species and habitats will devastate animals and hinder human progress. The excerpt mentions that as forests are destroyed, the decline of species will accelerate, and extinction rates are already significantly higher than before the coming of man. The author also states that the disappearance of species will result in the loss of new sources of scientific information, destruction of potential biological wealth, and the inability to discover and utilize various products and amenities.
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