What Darwin really meant by "natural selection"
#2—HERITABLE These variations must be “heritable.” That is, they are passed on to offspring. Bigger beaked birds have bigger beaked offspring.
#3—OFFSPRING Individuals must vary in the number of offspring they have. Some birds produce more chicks than others.
#4—ONE CHARACTERISTIC The number of offspring depends on variation in that characteristic. For example bigger beaked birds have more chicks than smaller beaked birds.
The Darwin Day event was sponsored by the Deerfield/Boca branch of Atheists and Secular Humanists of Florida (FLASH) a 401-c-3 organization, dedicated to the separation of government and religion.