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The bright colors of Grand Prismatic Spring and Yellowstone National Park, are produced by thermophiles, a type of extremophile.. An extremophile (from Latin extremus 'extreme' and Ancient Greek φιλία (philía) 'love') is an organism that is able to live (or in some cases thrive) in extreme environments, i.e., environments with conditions approaching or stretching the limits of what known ...
The response of naked carp to cold and low-oxygen conditions seem to be at least partly mediated by hypoxia-inducible factor 1 (HIF-1). [27] It is unclear whether this is a common characteristic in other high altitude dwelling fish or if gill remodelling and HIF-1 use for cold adaptation are limited to carp.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs.
In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is The Book of Saint Albans , an essay on hunting published in 1486 and attributed to Juliana Berners . [ 1 ]
2. Nile Crocodile. This is one of the largest reptiles in Africa, capable of reaching lengths of up to 20 feet and weighing over 2,000 pounds. They are not only huge, but they can hold their ...
The width of the shell is 9.80–40.02 mm (0.39–1.58 in); [2] the maximum width of the shell reaches 45.5 millimetres (1.79 in). [2] The average width of the shell of adult snails is 32 mm. [ 2 ] The average shell width in the Solitaire population was slightly less than that in the Kairei population. [ 15 ]
The mountain weasels are strict carnivores; some other animals in the suborder Caniformia are omnivores. They primarily feed on pikas and voles; they have an important ecological role in reducing or limiting the population numbers of these rodents. Muskrats, rabbits, ground squirrels, small birds, lizards, frogs, fish, and insects are also ...
The benthic communities of the seafloor are diverse and dense, with up to 155,000 animals found in 1 square metre (10.8 sq ft). As the seafloor environment is very similar all around the Antarctic, hundreds of species can be found all the way around the mainland, which is a uniquely wide distribution for such a large community.