Fire is not a living thing, and abiotic factors are the factors in an ecosystem that are non-living. So, fire is an abiotic factor in an ecosystem, though its not mentioned alot.
Artificial selection is when humans manually breed certain species to get a different trait, whether it is size or color. The most famous occurrence of this is wolves to dogs.<span />
Natural Selection is the process where organisms with favorable traits are more likely to reproduce and spread their traits into the next Generation. Over time this process allows organisms to adapt and evolve to their environment.
