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  • 2 decades ago
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    俗名:Saharan Silver Ant學名:Cataglyphis bombycina


    圖片來源:http://www.biome.net/cadre.php?p=search_fiches&mot... Grade Expository 2nd Nine Weeks AssessmentLiving on the Edge of Danger 17/27/2004Living on the Edge of Dangerby Jack MyersAnts probably aren’t your favorite insects. But you can’t help beinginterested in the story of one spunky kind of ant. It has some special tricks forliving in the hot, dry sands of the Sahara, in Africa. This desert is one of themost difficult places on Earth for animals to live.Most desert animals have learned how to beat the heat b burrowing andliving underground during the hottest part of the day. They come out to huntfor food at night and in the early morning. Of course those animals include thepredators, which come out at the same time to hunt. So ants and other smallinsects searching for their food are in danger of becoming food for largeranimals, especially the desert lizards.Head for HomeAs the morning sun rises, the sands heat up rapidly, and almost everycreature scurries back to its burrow. Those that are still hungry and keeplooking for food risk the danger of dying of heat shock before they get home.Most desert ants and other insects head for home when the temperaturegets up to about 95 degrees Fahrenheit. They must sneak past the ant lizardsand win the race against rising temperature to get home safely. By the time thetemperature gets to about 113 degrees, most ants are safe in their undergroundnests – except for one special kind, the Saharan silver ant.The silver ant stays out in higher temperatures than any other desert antdoes. In fact, it feeds on insects that died in the heat. How does it survive?And why does it do it?Cool TricksOne trick of the silver ant is that it can withstand higher temperatures –no one knows how – even up to 128 degrees.And it knows how to find places where it can rest and cool off. Down onthe surface of the sand, where the ant lives, is the hottest place around. Just4th Grade Expository 2nd Nine Weeks AssessmentLiving on the Edge of Danger 27/27/2004a few inches up above the sand the air is a lot cooler. So the silver ant spends apart of its hunting time climbing up on plants.Silver ants have another trick that is even more surprising. Their wholecolony stays in the nest until the sand temperature outside gets to about 116degrees. Then a few scouts give a signal, and hundreds of ants come pouringout. This usually happens about noontime, when the temperature is risingrapidly.Silver ants have a busy time of it, hunting and climbing up on grass stalksto cool off. Then they must hurry home again before the temperature gets to128 degrees. That gives them just a short hunting time outside their nest,often only about ten minutes.Naturally you have to wonder why the silver ants don’t come out of theirnest until the temperature gets so high. Scientists who studied themwondered, too. They found an answer in the behavior of the ant lizard. It isespecially fond of silver ants and often has its burrow close to one of theirnests. But the ant lizard has to worry about getting overheated, too. By thetime the temperature gets to 116 degrees, all the ant lizards are back in theirburrows.Magic TemperatureYou can see why 116 degrees becomes a magic temperature for silver ants.When the desert sand gets that warm, one of their enemies, the ant lizard, isasleep in its burrow. Then the ants can safely go out hunting. Of course theirsafety doesn’t last long. Their other enemy, the rising temperature, will tellthem they must start for home before the sand gets to a killing temperature.Lots of animals have special times of day or night when they do their huntingand searching for food. But there can’t be very many that have as short ahunting time as the Saharan silver ant.Many animals live very close to danger, especially those that live in the icycold of the arctic or in the hot, dry sands of the desert. Even so, the silver antmay hold some kind of record for living on the edge of danger.螞蟻旁邊大概不是您喜愛的昆蟲。但您禁不住是對一种燦爛的感興趣故事螞蟻。它有一些特別把戲為居住在撒哈拉大沙漠的熱, 乾燥沙子, 在非洲。這片沙漠是最困難的地方的當中一個在地球使動物居住。多數沙漠動物學會了怎麼摔打熱b 挖洞和居住地下在天期間的最熱的部份。他們出來尋找食物在晚上和在凌晨。當然那些動物包括掠食性動物, 同時出來尋找。如此螞蟻和其它小昆蟲尋找他們的食物是有成為的食物的危險為更大的動物, 特別是沙漠蜥蜴。頭為家作為早晨太陽上升, 沙子熱迅速地, 並且幾乎每個生物疾走回到它挖洞。那些餓並且保留尋找食物風險死的危險於熱震動在他們得到家庭之前。多數沙漠螞蟻和其它昆蟲朝向為家當溫度起來對大約95 華氏度。他們必須偷偷地走通過螞蟻蜥蜴和贏取競選反對溫度上升安全地得到家庭。當溫度得到對大約113 度的時候, 多數螞蟻是安全的在他們的地下巢- 除了一特別種類, Saharan 銀色螞蟻。銀色螞蟻比其他沙漠螞蟻停留在更高的溫度。實際上, 它哺養在死在熱的昆蟲。它怎麼生存? 並且為什麼它做它? 涼快的把戲銀色螞蟻的一個把戲是, 它能承受更高的溫度- 沒人知道怎麼- 平衡128 度。並且它會發現它可能休息和變冷靜的地方。下來在沙子的表面, 螞蟻居住, 是最熱的地方。第4 年級說明的第2 個九個星期評估居住蹭上危險2 7/27/2004 幾英寸在沙子之上空氣是很多更加涼快的。如此銀色螞蟻在植物上花費它的狩獵時間的部份上升。銀色螞蟻有是更加驚奇的其它把戲。他們的全殖民地停留在巢直到沙子溫度外部得到對大約116 度。然後幾位偵察員給一個信號, 並且上百螞蟻來傾吐。這通常發生關於正午, 當溫度迅速地上升。銀色螞蟻有它, 狩獵和上升的繁忙的時光在草莖變冷靜。然後他們必須在家再趕緊在溫度得到對128 度之前。給他們短狩獵時光在他們的巢之外, 經常只大約十分鐘。自然地您必須想知道為什麼銀色螞蟻不從他們的巢出來直到溫度得到很高。學習他們的科學家想知道, 也是。他們發現了一個答復在螞蟻蜥蜴的行為。它喜歡銀色螞蟻和經常有它挖洞近他們的巢的當中一個。但螞蟻蜥蜴必須擔心得到過度加熱, 也是。當溫度得到對116 度的時候, 蜥蜴是在他們的所有螞蟻挖洞。魔術的溫度您能看為什麼116 度成為一個魔術的溫度為銀色螞蟻。當沙漠沙子得到那溫暖, 他們的敵人的當中一個, 螞蟻蜥蜴, 是睡著在它挖洞。然後螞蟻能安全地出去狩獵。當然他們的安全長期不持續。他們的其它敵人, 溫度上升, 將告訴他們他們必須開始為家在沙子得到對殺害溫度之前。許多動物有日夜的特別時期當他們做他們的狩獵和尋找食物。但那裡無法是很多突然有作為狩獵時光作為Saharan 銀色螞蟻。許多動物居住非常緊挨危險, 特別是那些居住在arctic 冰冷的寒冷或在沙漠的熱, 乾燥沙子。即使如此, 銀色螞蟻也許舉行一些种紀錄為居住蹭上危險。資料來源:www.mcpherson.com/418/curriculum/ LangArts/4th_LA/edgeofdanger.pdf

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  • Anonymous
    2 decades ago


  • Anonymous
    2 decades ago

    笨笨 你的回答和沒回答是一樣的

  • 2 decades ago


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  • 2 decades ago


  • Anonymous
    2 decades ago

    我們國文也要上那課耶...= ="

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