What is one major difference between volcanic activity on earth and volcanic activity on mars, venus, and the moon? explain.

While the Moon and Mercury have relatively small volcanoes, those on Venus, Earth and Mars are large and numerous.  Earth's volcanoes are still active and Venus' may be, but scientists debate whether Mars' volcanic activity has finished.

i'm not sure

explanation:

i'll try whatever you got

c (diamond),

sio2 (quartz)