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Exam SCR topic 1 question 1 discussion

Actual exam question from GARP's SCR
Question #: 1
Topic #: 1
[All SCR Questions]

A climate scientist develops a presentation on modern climate change for a group of policymakers.
What observation does the scientist include in the presentation that provides evidence of human attribution to current climate change?

  • A. Atmospheric CO2 with isotopes consistent with fossil fuel emissions have increased since the mid-20th century.
  • B. Glacial ice records indicate atmospheric CO2 increased by 135 parts per thousand since the Industrial Revolution.
  • C. In the past 200 years, CO2 is responsible for most negative radiative forcing.
  • D. In the past 100 years, the atmospheric lifetime of CO2 attributed to energy use increased.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by Allexa at April 11, 2023, 8:02 p.m.

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MatMat2023
1 year, 1 month ago
Unambiguous answers to most of the questions which generate more confusion rather than helping. Once you reach question 36 you are forced to register to continue to avoid spams. Then after you register you are prompted to pay to continue even though they falsely claim to be a free site. What a joke.
upvoted 1 times
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Kezanne
1 year, 4 months ago
atmospheric CO2 has increased since industrial age. answer is A
upvoted 2 times
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agarwalprakash
1 year, 7 months ago
The correct statement is that atmospheric CO2 concentrations have increased by approximately 135 parts per million (ppm)
upvoted 2 times
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SCRnow
1 year, 7 months ago
B is NOT ok. ppm = parts per million, not parts per thousand
upvoted 2 times
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Allexa
1 year, 7 months ago
Also B it is ok.
upvoted 1 times
...

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C (25%)
B (20%)
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