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Park sang joon Posted 11 years ago
Grammar

Who is an unnamed unnamed

We are causing radical changes in the composition of the atmosphere and, consequently, in the global climate. Our activities release a variety of gaseous waste products. We once thought that the vastness of the atmosphere could absorb there materials without significant consequences, but an astronaut's view of our little planet squashes such naive notions. One pressing problem is the rising level of carbon dioxide in the atmosphere.
[Source: Reading for Results Ninth Edition by Laraine Flemming]
I'd like to know whom the author indicates by "an astronaut."
Thank you in advance for your help.
  

Top answer

We once thought that the vastness of the atmosphere could absorb these materials without significant consequences, but an astronaut 's view of our little planet squashes such naive notions. An astronaut: a person who is in outer space, (perhaps in the International Space Station) with a full view of Earth.

— AlpheccaStars

  • We once thought that the vastness of the atmosphere could absorb these materials without significant consequences, but an astronaut 's view of our little planet squashes such naive notions.
  • An astronaut: a person who is in outer space, (perhaps in the International Space Station) with a full view of Earth.
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2 Answers
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We once thought that the vastness of the atmosphere could absorb these materials without significant consequences, but an astronaut's view of our little planet squashes such naive notions.

An astronaut: a person who is in outer space, (perhaps in the International Space Station) with a full view of Earth.
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park sang joonan astronaut's view
The view seen by anyone who stands in the position of an astronaut, i.e., in outer space.

Likewise,

a bird's eye view: The view seen by anyone who stands in the position of a bird (seeing through the bird's eye), i.e., very high in the sky.

CJ
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