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Author Question: The most severe mass extinction during the past 500 million years occurred at the end of which ... (Read 138 times)

WhattoUnderstand

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on: Jul 27, 2018
The most severe mass extinction during the past 500 million years occurred at the end of which geological period?
 
  A) Devonian
  B) Triassic
  C) Permian
  D) Cretaceous

Question 2

A satellite encircles Mars at a distance above its surface equal to 3 times the radius of Mars. The acceleration of gravity at the satellite, as compared to the acceleration of gravity on the surface of Mars, is
 
  A) one-ninth as much.
  B) zero.
  C) the same.
  D) one-third as much.
  E) one-sixteenth as much.


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fffftttt

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

C

Answer to Question 2

E


WhattoUnderstand

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Reply #2 on: Jul 27, 2018
Thank you!


fffftttt

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Reply #3 on: Jul 27, 2018
Always glad to help...


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