In case you haven't been paying attention over the last 20 or 30 years, the evidence is now overwhelming thatmodern birds evolved from dinosaursto the extent that some biologists maintain that modern birds *are* dinosaurs (cladistically speaking, that is). But while dinosaurs were the largest...
In birds, reptiles and amphibians the IgY isotype exhibits the functional characteristics of both of IgG and IgE. Hence, the gene for IgY most likely duplicated some time during early mammalian evolution and formed the ancestor of present day IgG and IgE. To address the question of when IgY ...
Kielen, Paul M
Thomas Anders, is a German singer, best known as the lead singer of German duo Modern Talking. Starting his singing career while still in school, Anders unsuccessfully attempted to establish himself as a schlager artist for several years. After forming the eurodisco duo Modern Talking with Diete...
Researchers say these changes are having severe effects on animals such as penguins, seals, and polar bears.Changes in temperature and wetness in the air can also affect the reproduction (繁殖) of some reptiles(爬行动物) and amphibians(两栖动物). For example, the sex of baby turtles is ...
Fish and Wildlife Service 50 to 100 million birds are killed yearly by vehicles. Research reports road kill as a significant factor in the decline of amphibians. Motorized transport dramatically reduces insect populations.Though humans invented vehicles, we have trouble understanding them too. The 210...