yes, some are over 5 times bigger than mnt. everest
yes
Yes. There are volcanoes on Venus and Mars as well as Jupiter's moon Io. None of the volcanoes on Venus and Mars are known to be active, though.
There is evidence to suggest that there were active volcanoes on Mars in the past, but currently, there are no active volcanoes on the planet. The most famous volcano on Mars is Olympus Mons, which is the largest volcano in the solar system.
yes
yes! many
Yes.
no
Yes, but little because most ofthe volcanoes are dead
Yes infact there in one on mars according to nasa
Venus definitely have more volcanoes than Mars. Yes, Venus and Mars have pretty much all extinct and dormant volcanoes, but they're still volcanoes. Think of it like this: when someone dies or is in a coma, that doesn't mean they're not human. Yes I know that was dark deal with it :P
yes
yes