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Author Question: Process of Science: What evidence do scientists have that supermassive black holes exist? What ... (Read 64 times)

faduma

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on: Jul 27, 2018
Process of Science: What evidence do scientists have that supermassive black holes exist?
 
  What will be an ideal response?

Question 2

The atmosphere of Mars is made mostly of
 
  A) nitrogen
  B) carbon dioxide
  C) hydrocarbons
  D) ammonia


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ansleighelindsey

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

Observations of orbiting stars and gas clouds in galaxies show that they are orbiting extremely massive (tens of millions of solar masses) objects that are invisible.

Answer to Question 2

B


faduma

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Reply 2 on: Jul 27, 2018
Wow, this really help

emsimon14

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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