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  1. ...an atmosphere of a planet that did not form by accretion during the formation of the planet's sun. A secondary atmosphere instead forms from internal volcanic activity, or by accumulation of material...

    1 Answers · Science & Mathematics · 18/04/2013

  2. ... not changed since it was created b. Mars secondary - it used to be denser when volcanoes were active c...

    1 Answers · Science & Mathematics · 20/04/2013

  3. Only earth. The other planets are all too far away to influence anyone. Unless one is an astronomer, then the visibility of a planet can be an event that makes said astronomer interested.

    3 Answers · Science & Mathematics · 17/05/2012

  4. ...planets that have achieved hydrostatic equilibrium could be considered secondary planets since they revolve around other planets rather than around stars. If...

    8 Answers · Science & Mathematics · 25/04/2008

  5. The first atmosphere was most likely H2, He. But these gases are too light to be retained for a long time, and are quickly replaced by an atmosphere produced by volcanic out gassing. It contained...

    2 Answers · Science & Mathematics · 18/03/2010

  6. ... search, I remembered hearing something about "secondary planets." So......here's something to muddy the waters! http://www.aaa...

    16 Answers · Science & Mathematics · 10/06/2007

  7. ... STILL IS A PLANET!!!. its just a secondary planet, and no logner has al hte features to be considered one of...

    18 Answers · Science & Mathematics · 13/09/2006

  8. That's great, china is becoming stronger and stronger. Congratulation.

    3 Answers · Science & Mathematics · 24/10/2007

  9. I am 38 and 5/6ths umalti, I do believe. But yes, it's quite confusing to a reader. What I would recommend is leaving out the comparisons to Earth time altogether. Let people know that Amo's years...

    2 Answers · Arts & Humanities · 09/06/2010

  10. Sun: Libra Moon: Pisces Mercury: Libra Venus: Virgo Mars: Libra

    2 Answers · Entertainment & Music · 11/05/2012

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