The succulent cells have to be very efficient with their carbon atoms because there is a limited supply of carbon dioxide. 67 One last succulent survival trick worth mentioning is hair. Some plants grow hairs on their leaves or stems in order to provide some extra protection from the wind ...
Among the living species of Canidae, the African wild dog (hereafter, AWD) is considered to be the most specialized with regard to adaptations for cursoriality, diet, and coat coloration1. Along with a gracile appendicular skeleton, the most notable characteristic of AWDs is the loss of the f...
Some freshwater protozoans, especially the ciliatesSpirostomum,Loxodes, andPlagiopyla, avoid unpleasant conditions, especially lack of oxygen, by abandoning their bottom-dwelling way of life and swimming upward to position themselves at a level where some oxygen is available but where they are not ...