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Author Question: The age of a star cluster can be determined by the luminosity of the main sequence turnoff into the ... (Read 19 times)

Awilson837

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on: Jul 27, 2018
The age of a star cluster can be determined by the luminosity of the main sequence turnoff into the giant stage.
 
  Indicate whether the statement is true or false

Question 2

Which of these does Mars NOT have to help its case of past or present life?
 
  A) occasional water flows, and past records of much larger ones
  B) a protective ozone layer
  C) carbon dioxide to provide some greenhouse warming
  D) a favorable distance from the Sun
  E) rover discoveries of sedimentary rocks and carbonates on the surface of Mars


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bubulittle310@msn.cn

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Reply #1 on: Jul 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

B


Awilson837

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

daiying98

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Reply 3 on: Yesterday
Wow, this really help

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