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Author Question: Carbon dioxide dominates the atmospheres of Venus and Mars, but on Earth most of it lies underground ... (Read 78 times)

Pineappleeh

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on: Jul 27, 2018
Carbon dioxide dominates the atmospheres of Venus and Mars, but on Earth most of it lies underground as ________.
 
  Fill in the blank(s) with correct word

Question 2

What are some advantages of radio telescopes over optical telescopes?
 
  What will be an ideal response?


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hanadaa

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

carbonate (or limestone) rocks

Answer to Question 2

Radio telescopes can be used day or night, they are much less affected by cloudy skies, and they open a new window to observe the Universe. They allow us to observe astronomical objects at a different wavelength than an optical telescope, thus giving an opportunity to compare and contrast the images.


Pineappleeh

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

cam1229

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Reply 3 on: Yesterday
Excellent

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