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What do all of the inner planets have in common?
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
Meterorids usually come from ________.
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
Aside form Earth, which inner planet once had liquid water on its surface?
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
One of the conditions required for life on Earth is ________
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
Earth and Venus are much alike in terms of
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
The atmospheres of the gas giant planets cannot escape into space becasue
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
Which is the smallest terrestrial planet?
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
What shape are the orbits of most comets?
liquid water
comets or astroids
They all are small and have rocky surfaces
The planets have very strong gravitional pulls
Long and narrow ellipses
Mercury
Mars
Size and Density
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