Что интересно, у более южных белок очень часто кисточки вообще отсутствуют. Наши сибирские белки как раз узнаются по этим красивым пышным кисточкам.
Кисточки на ушах у белок — это многофункциональный адаптивный признак, сочетающий терморегуляцию, защиту и элементы общения. Функции кисточек: Не увеличивают теплоотдачу, потому что состоят из неживых волосков и не содержат кровеносных сосудов. Помогают сохранять тепло — они частично прикрывают ушную раковину, снижая воздействие холода и ветра. Зимой кисточки становятся длиннее, а летом — короче, что отражает сезонную адаптацию к температуре.
Что интересно, у более южных белок очень часто кисточки вообще отсутствуют. Наши сибирские белки как раз узнаются по этим красивым пышным кисточкам.
Кисточки на ушах у белок — это многофункциональный адаптивный признак, сочетающий терморегуляцию, защиту и элементы общения. Функции кисточек: Не увеличивают теплоотдачу, потому что состоят из неживых волосков и не содержат кровеносных сосудов. Помогают сохранять тепло — они частично прикрывают ушную раковину, снижая воздействие холода и ветра. Зимой кисточки становятся длиннее, а летом — короче, что отражает сезонную адаптацию к температуре.
BY Сибирский Зоопарк
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If you initiate a Secret Chat, however, then these communications are end-to-end encrypted and are tied to the device you are using. That means it’s less convenient to access them across multiple platforms, but you are at far less risk of snooping. Back in the day, Secret Chats received some praise from the EFF, but the fact that its standard system isn’t as secure earned it some criticism. If you’re looking for something that is considered more reliable by privacy advocates, then Signal is the EFF’s preferred platform, although that too is not without some caveats. Telegram was co-founded by Pavel and Nikolai Durov, the brothers who had previously created VKontakte. VK is Russia’s equivalent of Facebook, a social network used for public and private messaging, audio and video sharing as well as online gaming. In January, SimpleWeb reported that VK was Russia’s fourth most-visited website, after Yandex, YouTube and Google’s Russian-language homepage. In 2016, Forbes’ Michael Solomon described Pavel Durov (pictured, below) as the “Mark Zuckerberg of Russia.” Since its launch in 2013, Telegram has grown from a simple messaging app to a broadcast network. Its user base isn’t as vast as WhatsApp’s, and its broadcast platform is a fraction the size of Twitter, but it’s nonetheless showing its use. While Telegram has been embroiled in controversy for much of its life, it has become a vital source of communication during the invasion of Ukraine. But, if all of this is new to you, let us explain, dear friends, what on Earth a Telegram is meant to be, and why you should, or should not, need to care. The S&P 500 fell 1.3% to 4,204.36, and the Dow Jones Industrial Average was down 0.7% to 32,943.33. The Dow posted a fifth straight weekly loss — its longest losing streak since 2019. The Nasdaq Composite tumbled 2.2% to 12,843.81. Though all three indexes opened in the green, stocks took a turn after a new report showed U.S. consumer sentiment deteriorated more than expected in early March as consumers' inflation expectations soared to the highest since 1981. The next bit isn’t clear, but Durov reportedly claimed that his resignation, dated March 21st, was an April Fools’ prank. TechCrunch implies that it was a matter of principle, but it’s hard to be clear on the wheres, whos and whys. Similarly, on April 17th, the Moscow Times quoted Durov as saying that he quit the company after being pressured to reveal account details about Ukrainians protesting the then-president Viktor Yanukovych.
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