Yes. If it were life like we know it here on earth, it would have to be located deep in Europa's ocean near thermal (heat) vents in the ocean's floor.
Europa has frozen oceans.
Yes, there is water on one, and volcanoes active on another.
Venus has no moons.
It is very unlikely.
yes europa has an icy surface but underneath theres underwater volcanoes that warms the ocean. plus theres some oxigen which now scientist belive that there is aquatic life there.
The Encladus moon
No. Also, they are only very small.
Water
Yes,Other planets could scientists believed some life were on other planets and signs of life
Jupiters moon, Europa, is special as it is thought to have a huge layer of water under its crust. This water may be able to support simple life forms if the conditions are right.
It is my personal opinion that Earth cannot be the only planet that has abundant life. I believe that if life is going to be discovered on another planet that it will be the newest plant to be discovered, planet Kepler 186f.
Moons, yes. Life, quite possibly. While every planet is unique, the planets in other solar systems are not so different from the planets in ours so as to not have moons. We have even detected possible evidence of moons, though it is very hard to verify across interstellar distances. Life is somewhat harder as only one known planet (Earth) has life, so we do not know that the probabilities are. We have found planets orbiting other stars which may be in the right temperature range to support life, but we can't actually tell if they can.