A volcanologist refers to a geologist who examines the procedures taking place in the generation and eruptive activity of volcanoes and their historic and present eruptions, called volcanology.
Seismologists are geologists and scientists who study planetary activities and earthquakes, as well as their influences, like tsunamis. They utilize instruments to collect information and monitor the Earth's crust.
This is not a question we can answer, this is a question only you can answer because it is asking for your personal belief on wether alien's exist outside of earth or not.
Answer: Generally, these factors are based on two things: hydrostatic pressure and osmotic pressure. Water will only flow across a membrane firstly if the membrane is permeable to water.
