1. They believe in the theory of Panspermia that advances that the building blocks of life came to Earth from outer space.
2.Microbial life forms have been discovered on Earth that can survive and even thrive at extremes of high and low temperature and pressure, and in conditions of acidity, salinity, alkalinity, and concentrations of heavy metals that would have been regarded as lethal just a few years ago. These discoveries include the wide diversity of life near sea–floor hydrothermal vent systems, where some organisms live essentially on chemical energy in the absence of sunlight. Similar environments may be present elsewhere in the solar system.
3. it depends on how the mars would be colonized, the environment on Mars is hostile for life, the radiation is high, atmosphere is thin, and the gravity is 10 times less than earth.
hope it helps :>
Ano ang modal ngayon ko lang nalaman yan
Who discovered the water? It was the chemist Henry Cavendish (1731 – 1810), who discovered the composition of water, when he experimented with hydrogen and oxygen and mixed these elements together to create an explosion (oxyhydrogen effect).
Because even if there is water there are still several problems like the atmosphere is too thin and there is mostly methane or other gases in the air that are dangerous to humans soo no im sorry