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Home Q & A Board Science-Related Homework Help Physics Astronomy
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teysha teysha
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6 years ago
Discuss the roles that ammonia, hydrogen sulfide, and methane play in the appearances of the jovian planets.
 
  What will be an ideal response?

Question 2

The simplest life forms appeared on Earth by the time it was how old?
 
  A) five million years
  B) one billion years
  C) 2.5 billion years
  D) 3.5 billion years
  E) 4.5 billion years

Question 3

A typical protostar may be several thousand times more luminous than our Sun; where does this energy come from?
 
  What will be an ideal response?

Question 4

Organic molecules are
 
  A) carbon-based.
  B) silicon-based.
  C) living cells.
  D) found only on Earth.
  E) not found outside our solar system.
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Jango4445Jango4445
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#1
Posts: 330
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6 years ago
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teysha Author
wrote...
#2
6 years ago
Thank you for your assistance, again and again
wrote...
#3
6 years ago
My pleasure
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