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21 hours ago · The water vascular system of the starfish is a hydraulic system made up of a network of fluid-filled canals and is concerned with locomotion, adhesion, food manipulation and gas exchange. Water enters the system through the madreporite, a porous, often conspicuous, sieve-like ossicle on the aboral surface. It is linked through a stone canal ...
5 hours ago · Two southwestern fish, the Rio Grande chub and sucker, did not make the list. It’s a bittersweet outcome for conservation groups. The federal decision, announced in June, is a sign that years of multi-agency conservation efforts are helping the species. But more protections could also come in handy: One-third of the fish populations could die ...
21 hours ago · Here is a list of examples in which unrelated proteins have similar functions with different structure. The convergent orientation of the catalytic triad in the active site of serine and cysteine proteases independently in over 20 enzyme superfamilies. [252] The use of an N-terminal threonine for proteolysis.
21 hours ago · Cats are common pets throughout the world, and their worldwide population as of 2007 exceeded 500 million. [199] As of 2017, the domestic cat was the second most popular pet in the United States, with 95.6 million cats owned [200] [201] and around 42 million households owning at least one cat. [202]
21 hours ago · Latin ( lingua Latina, Latin: [ˈlɪŋɡʷa ɫaˈtiːna], or Latinum, Latin: [ɫaˈtiːnʊ̃]) is a classical language belonging to the Italic branch of the Indo-European languages. Considered a dead language, Latin was originally spoken in Latium (now known as Lazio ), the lower Tiber area around Rome, Italy. [1] Through the expansion of the ...
21 hours ago · Part (s) of plant. Fruit. Uses. Food. A banana is an elongated, edible fruit – botanically a berry [1] – produced by several kinds of large herbaceous flowering plants in the genus Musa. In some countries, cooking bananas are called plantains, distinguishing them from dessert bananas. The fruit is variable in size, color, and firmness, but ...
21 hours ago · Surrealism is an art and cultural movement that developed in Europe in the aftermath of World War I in which artists aimed to allow the unconscious mind to express itself, often resulting in the depiction of illogical or dreamlike scenes and ideas. [1] Its intention was, according to leader André Breton, to "resolve the previously ...
