The median for group 2 is almost double the median for group 1. Group 2's median would be 80, and 1's would be a little over 40, which is about half. The median is the middle line of the box on the graph.
Underwater Ways!
The Aquarius Reef Base is an underwater habitat 5.4 meters off Key Largo in the Florida Keys National Marine Sanctuary. It is deployed on the ocean floor 62 ft below the surface and next to a deep coral reef called Conch Reef.
(That is all I can tell you.)
It would be best to ask a professional on the subject.
Answer:
not too sure but a . . . . .. .
I believe it is behavioural isolation. When there are changes within a certain species, e.g. new birdcalls are formed in certain individuals in a species, "traditional" birds may not like such mating calls and only choose to mate with the more common birdcalls from majority of the birds. There are also some birds that may like the new birdcalls, and choose to mate with birds with those birdcalls. They become genetically isolated as they continue such behavior. Eventually, through genetic drift and other mutations, different species form from a single specie.
Hope this helps! :)
