All creatures breathe in some fashion, but how the job gets done has changed from fish to amphibian to reptile to mammal.
Curt Stager and Martha Foley chart the evolution of animal respiration.
The ubiquitous bird of cities and towns was designed for a different environment. The pigeon s distinctive style of flight is adapted for maneuverability in tight places - near vertical takeoffs and quick changes of direction. This adaptation to cliff and.
Martha Foley: So here s a conversation
about natural selection. I think, you correct me if I m wrong. You have a story of these guys who were looking at swallows out in the Midwest somewhere over a 30 year period. And were they adapting to the cars that were killing them? Or what?
Curt Stager: Yeah, it s a neat story. But it s always a booby trap, talking about natural selection and evolution and adaptation, when you don t have a lot of time to talk about it. Because the simple way of describing that kind of thing makes it sound like what it s not, like there s a purpose to it.
Natural Selections: Turns out bullheads ('trash fish') are really good parents northcountrypublicradio.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from northcountrypublicradio.org Daily Mail and Mail on Sunday newspapers.
Natural Selections: hyenas get a bad rap northcountrypublicradio.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from northcountrypublicradio.org Daily Mail and Mail on Sunday newspapers.