Social, cultural and economic factors influence fertility, mortality and migration rates. Migration is affected by various factors like age, sex, marital status, education, occupation, employment etc. Age and sex are main demographic factors that affect the migration.
Maybe under your bed hope that helped :)
Small antennas on the spacecraft can beam weak radio signals back to earth meaning it can in some way communicate
Just as you "step" outside of our Earths ozone layer everything there it will kill you if not for the special suits! Radiation, space vaccum, pressure, temperature, etc is not human species friendly! That's why we need The ozone layer, without which we would not survive more than a few days on this planet!
