There is a community of organisms but no no living components
To ensure the continuity of the species
increase variation in species for natural selection to occur
If you stay in the water for too long your hand will shrink
Abiogenesis is the theory that life arose from non living molecules to form the earliest life forms. In the simplest sense, once there is life, life will arise from living rather than non living matter. However, there are those who speculate that it is possible for abiogenesis to occur more than once.
