Based on the frequency with which we see comets from Earth,astronomers estimate the total number of comets in the solar system to be
A)100 million.
B)1 billion.
C)10 billion.
D)100 billion.
E)1 trillion.

Question

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The Answer of Based on the frequency with which we see comets from Earth,astronomers estimate the total number of comets in the solar system to be
A)100 million.
B)1 billion.
C)10 billion.
D)100 billion.
E)1 trillion.

Based on the Frequency with Which We See Comets from Earth,astronomers