On the Origin of Species
{"Image DocumentName": "On the Origin of Species", "Image ImageDescription": "Chapter 4 - Natural Selection, or the Survival of the Fittest. Isolation is important in the process of natural selection. In a smaller confined area conditions will be almost uniform; so that natural selection will tend to modify individuals of the same species in the same manner. Intercrossing with the individuals of the surrounding districts will also be prevented. After any physical change in conditions such as of climate, elevation of the land, etc., isolation prevents the immigration of better adapted species; and thus new places will be left open to modification of the old inhabitants. Lastly, isolation will give time for a new variety to be improved at a slow rate.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}