When the conditions of a species alter, those individuals that survive to reproduce may have beneficial modifications - organs or limbs that either become stronger or more useful, or else, when not needed for survival, weakened and diminished. The human appendix may exemplify just such a process phenomenon. But any variation within a species is, inevitably, a long, slow process. Instinct Habitual instincts are inherited within each species. Ants and bees build their nests and hives with no previous experience.
Birds migrate and build homes according to their unique inner senses.
Objections to the general theory of evolution are presented in both Darwin's conclusion and glossary of terms. Darwin's observations led him to believe that species did adapt to their changing surroundings. Authors of the highest eminence seem to be fully satisfied with the view that each species has been independently created. To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of an individual. When I view all beings not as special creations, but as lineal descendants of some few beings which have lived long before the first bed of the Cambrian system was deposited, they seem to me to become ennobled.