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John Legend and Wanda Sykes [1] explore their rich and extensive free negro heritages. Margarett Cooper also makes an appearance in this episode, appearing only a year before her death in 2013. [2] In keeping with the theme of the episode, Cooper seeks help from Gates to answer long-held questions about her free heritage.
How Do Giraffes Drink Water Through Those Long Necks? Giraffe necks are so long they can’t reach the ground. To get a sip of water from a water hole, a giraffe will splay its legs in an awkward ...
Finding Your Roots with Henry Louis Gates, Jr. is a documentary television series hosted by Henry Louis Gates Jr. that premiered on March 25, 2012, on PBS.In each episode, celebrities are presented with a "book of life" that is compiled with information researched by professional genealogists that allows them to view their ancestral histories, learn about familial connections and discover ...
Escape response in Antarctic krill.. Escape response, escape reaction, or escape behavior is a mechanism by which animals avoid potential predation.It consists of a rapid sequence of movements, or lack of movement, that position the animal in such a way that allows it to hide, freeze, or flee from the supposed predator.
Clearly at the zoo giraffes aren't worried about predators, so I wondered if giraffes in captivity sleep longer than those in the wild. I did a quick bit of research and found that yes they do ...
At the second level, an animal performs a programmed act of behaviour, as when a prey animal feigns death to avoid being eaten. At the third level, the deceptive behaviour is at least partially learnt, as when a bird puts on a distraction display , feigning injury to lure a predator away from a nest.
African giraffes are in danger of becoming extinct. Hunting and poaching have decimated the continent's giraffe population by about 40 percent, according to one estimate. There are now only about ...
There is a strong evolutionary pressure for prey animals to avoid predators through camouflage, and for predators to be able to detect camouflaged prey. There can be a self-perpetuating coevolution, in the shape of an evolutionary arms race, between the perceptive abilities of animals attempting to detect the cryptic animal and the cryptic characteristics of the hiding species.