Evolution highlights XIX

Fascinating story about how the dinosaurs could be so huge, have such small heads, and still have enough time to eat all they needed. They didn't chew their food.

Fascinating story about an experiment in Bahamas showing that for a certain species (Anolis lizards) competition among conspecifics is a larger factor determining the selective pressure than predation by birds and snakes. But it does seem like it could be a special (although not unique) case. Lots of species obviously have adaptations to cope with predators, such as great running speed, flight, gigantism, horns, armor, camouflage, mimicry, icky tasting flesh, and explosives, to mention just a few.



Notice the creationist comment at the end of this video.