Species don't change so that the conditions become ideal for that species, species change so that the species is (close to) ideal for dealing with that environm

Species don't change so that the conditions become ideal for that species, species change so that the species is (close to) ideal for dealing with that environment. This is a very important distinction. Certain plants may grow in the desert with very little water, but that doesn't mean that they don't grow faster with more water.