Is tobacco use increasing in popular films?
The gap between the representation of tobacco use in films and the reality of tobacco continues to widen, with the prevalence of smoking among lead characters four times the smoking prevalence among comparable individuals in society at large.
These results support growing evidence that suggests many traditionally recognized angiosperm clades (families and genera) are too young for their distributions to have been influenced strictly by Gondwanan fragmentation. Instead, it appears that corridors of dispersal may be the best explanation for numerous angiosperm clades with Gondwanan distributions.