Question
1. It is refreshing to read a book about our planet by an author who does not allow facts to be (i)__________ by politics: well aware of the political disputes about the effects of human activities on climate and biodiversity, this author does not permit them to (ii)__________ his comprehensive description of what we know about our biosphere. He emphasizes the enormous gaps in our knowledge, the sparseness of our observations, and the (iii)__________, calling attention to the many aspects of planetary evolution that must be better understood before we can accurately diagnose the condition of our planet.
Blank (i)
(a) overshadowed
(b) invalidated
(c) illuminated
Blank (ii)
(d) enhance
(e) obscure
(f)underscore
Blank (iii)
(g) plausibility of our hypotheses
(h) certainty of our entitlement
(i) superfi ciality of our theories

• i. overshadow
  ii.underscore
  iii.superficiality of our theories
  
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