How Birds Evolvedoi:10.1515/9780691227269FutuymaDouglas J.Princeton University Press
Most people agree that bacteria evolve in small ways (microevolution), but there is some controversy around the idea of speciation (macroevolution). Let's take a look at where the controversy comes from. Holes in the Theory The theory of evolution is just that -- a theory. According to ...
With Facebook she could stay connected with her family no matter how far away they were. 出自-2017年6月听力原文 The researchers also note that dogs scan faces as a whole to sense how people are feeling, instead of focusing on a given feature. 出自-2017年6月听力原文 Some passengers remain...
birds are migrating and lizards are getting blown away by hurricanes. the signs are everywhere; animals are changing because of climate change. we asked biologist thor hanson to walk us through three animal adaptation experiments. read thor hanson’s book hurricane lizards and plastic squid https:...
The pace-of-life syndrome hypothesis proposes that an organism’s metabolic rate, lifespan, reproductive strategies, and behavior evolve in predictable ways. Under this framework, species with fast metabolisms, short lifespans, and high reproductive rates are expected to have higher blood sugar and...
Originating in Leyte, a city in the same Visayas archipelago asCebu, the dance has become a source of national pride. Before the Spanish colonised the Philippines in the 1500s, tinikling was already being danced by Filipinos. It would evolve to incorporate...
Notebook Pen For this activity, you'll need to find some good-sized worms to observe. You can dig in soft, moist garden soil to find lots of small ones. To find big nightcrawlers, go out onto a healthy lawn at night with a flashlight. You might try lifting a large stone or flowerpo...
Birds are also smaller than we are (well, omitting the ostrich), which means that they have a higher surface-area-to-volume ratio than we do. This is a problem because the volume (inside) of an animal is where heat is produced and stored, while the surface (skin) of the animal is ...
After all, you can’t enjoy watching birds if there are no birds to follow; gaze at the sunset if it’s obscured by skyscrapers; or stop and smell the flowers if they don’t have room to grow. L) And yet even this long-protected space could someday become less hospitable to ...
This chapter is in the book Evolution Evolving 203How the Turtle Got Its ShellThe science of evolutionary biology has three principal goals—or, perhaps, two goals and an aspiration. One is to reconstruct the history of life on Earth. Evolutionary biologists seek to unveil the rich and often ...