Common
Shadow biosphere
Hypothetical biosphere of Earth
Shadow biosphere
A shadow biosphere is a hypothetical microbial biosphere of Earth that would use radically different biochemical and molecular processes from those of known life. Although life on Earth is fairly well studied, if a shadow biosphere exists, it may be unnoticed because the exploration of micro-organisms targets primarily the biochemistry of macro-organisms.
Open boosters, collect cards and trade them. Free to play.
Play for free