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Sarin_Gas_against_animals_-_weapons_experiment.ogv (Ogg multiplexed audio/video file, Theora/Vorbis, length 4 min 46 s, 480 × 360 pixels, 556 kbps overall, file size: 18.93 MB) This is a file from the Wikimedia Commons .
The fennec fox's large ears help keep it cool: when the blood vessels dilate, blood from the body cycles in and dissipates over the expanded surface area. [1]A xerocole (from Greek xēros / ˈ z ɪ r oʊ s / 'dry' and Latin col(ere) 'to inhabit'), [2] [3] [4] is a general term referring to any animal that is adapted to live in a desert.
The Living Desert is a 1953 American nature documentary film that shows the everyday lives of the animals of the desert of the Southwestern United States. The film was written by James Algar, Winston Hibler, Jack Moffitt (uncredited) and Ted Sears. It was directed by Algar, with Hibler as the narrator and was filmed in Tucson, Arizona. [3]
Jerboas are adapted to live in deserts therefore are called xerocole animals. They are nocturnal and spend most of their day burrowed under sand to avoid the heat. [11] Burrowing under the sand, they evade the heat from the sun, minimizing water loss and avoiding dehydration. By decreasing activity during the day they require less water intake.
Sand dunes in the Sahara Desert. Desert ecology is the study of interactions between both biotic and abiotic components of desert environments. A desert ecosystem is defined by interactions between organisms, the climate in which they live, and any other non-living influences on the habitat.
Moreover, some other animals in deserts including coyote, desert bighorn sheep, desert kangaroo rat, desert tortoise, javelina and Mojave rattlesnake, cougar. Overall, different tropical deserts have different species, for example, Sonoran Desert toad, Sonoran pronghorn antelope are typical animals in Sonoran Desert. [10]
The Gobi Desert is the fastest expanding desert on Earth, as it transforms over 3,600 square kilometres (1,400 square miles) of grassland into wasteland annually. [58] Although the Gobi Desert itself is still a distance away from Beijing , reports from field studies state there are large sand dunes forming only 70 km (43.5 mi) outside the city.
The study of Epigenetics explains how certain mutations (e.g., histone modification and DNA methylation) affect how genes are expressed without altering the genetic code, suggesting learning from the environment can change gene expression, and thus neural pathways, to modify the animals behaviour within its lifetime. [7]
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