【推薦】寫動物的英語作文六篇
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寫動物的英語作文 篇1
When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, that's what's supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So what's a hungry bear to do?
Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.
"We've had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."
University of Alberta biologist Nick Pilfold.
"And we've known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?
To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitoba's Polar Bear Alert Program.
While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.
"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and that's going to help supplement against longer ice-free seasons, that really doesn't show up in the data."
The problem is that polar bears evolved to rely on the marine diet.
"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; they're highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing that's going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when there's sea ice."
Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, can't last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species' survival in doubt.
北冰洋在秋季結冰以后,北極熊就會出發去尋求它們最喜歡的食物:富含脂肪的海豹和胡子海豹。海冰在夏季開始融化斷裂。這使北極熊在夏季無法吃到美味的海豹,所以它們進入禁食期。至少,情況應該是這樣。但是由于地球變暖,溫暖的無冰季節越來越長。那饑餓的北極熊要怎么辦?
科學家曾經認為,北極熊可能會轉向陸地上的食物來補充它們對鰭足類動物飲食的需求,進而生存下去,這些陸地食物包括雪雁、雪雁蛋和北美馴鹿。
“文獻中有過這類辯論,即在寒冷融化時陸地食物是否能滿足北極熊的營養需求。”
尼克·皮爾福德是加拿大阿爾伯塔大學的生物學家。
“通過上世紀70年代初的研究,還有早期的探險者日志,我們很早以前就知道,北極熊會以陸地食物為食。但是辯論的焦點在于,這些食物是否能增加北極熊的能量。”換句話說,這些替代食物能否為北極熊提供足夠的營養,彌補不能進食海豹帶來的損失?
為了解開這個疑惑,皮爾福德及同事對西哈德遜灣荒野地區的北極熊在無冰季期間每天失掉的體重進行了估算,從表面上看,北極熊在這段時間食用了陸地食物。隨后,他們將這一數據與通過馬尼托巴北極熊預警計劃暫時捕得的北極熊所失掉的體重進行了對比。
在被關期間,北極熊不吃東西。它們的體重每天大約下降1公斤。雖然野生北極熊能享用北極“小吃”,但是它們的體重每天也同樣會下降1公斤。這一研究結果發表在《生理學和生化動物學》期刊上。
“顯然結果表明,陸地食物不能為北極熊提供足以抵消大量損失的能量。所以,北極熊可以從食用海冰下面的食物轉向食用陸地食物,并幫助它們對抗日益延長的無冰季這個觀點,并沒有在這項數據中得到證明。”
問題是,北極熊進化成了依靠海洋食物的動物。
“陸地食物以蛋白質和碳水化合物為基礎,而北極熊需要的食物以脂肪為主。脂肪是這些熊真正需要的東西;它們高度適應的情況是,將脂肪吸收進它們的系統中,然后把這些脂肪放在身上以增加體重,這樣它們之后就可以依靠這些脂肪來度過禁食期。唯一能提供給北極熊這種脂肪的就是海洋哺乳動物。但是它們只能在有海冰時食用到這些海洋哺乳動物。”
成年北極熊可以8個月不進食。但是小一些的未成年北極熊已經不再被哺育,它們必須要去獵食,可是它們不能在漫長的無冰季期間一直不進食。所以,隨著北極地區變暖,較小的北極熊將會大批死亡。這使這些物種的生存成為問題。
寫動物的英語作文 篇2
Say my favorite animal, is my two little hamster small black and small white, now I will briefly introduce them!
My little white body is thin, good-natured bad, it is not very good at eating! When he sleeps, he first shrinks his foot to his coat and rolls his body into a ball.
Me again black, it can be much more lovely than with small white, never call a sound, even if in a cage to eat rob it was a small white also don't cry not make not shout or call, when it with small white play it also let the small white everywhere, they are just like a pair of siblings.
Hamsters not fussy what all eat and very healthy, because they are the staple food is grain, the little black first put his head at the dinner table to eat bowl eat grains, then drink a few saliva, when the rest if you wake up the it, it will be very grumpy like Campbell hamsters (Campbell hamsters also called Mongolia hamsters or Siberian hamster. Very grumpy.)
My little black is a strange and grumpy little one, and they are my favorite animals, "little hamsters."
說道我最喜歡的動物,就是我的倆小倉鼠小黑和小白了,現在我就簡單的介紹一下它們吧!
我的'小白外形偏瘦,脾氣時好時壞,它吃飯時脾氣不是很好呦!它睡覺的時候先把腳縮到皮毛后在把身體卷成一團。
我再說一下小黑吧,它和小白比起來可乖多了,從來不叫喚一聲,就算在籠子里吃的被小白搶了它也不哭不鬧不喊不叫的,在它和小白玩的時候它也處處讓著小白,它們就像一對姐弟一樣。
小倉鼠不挑食啥都吃而且很健康,因為它們的主食是五谷雜糧,小黑吃飯時先把頭放進食盆里吃雜糧然后喝幾口水,當它休息時你如果把它吵醒,它的脾氣就會很暴躁像坎貝爾倉鼠一樣(坎貝爾倉鼠也叫蒙古倉鼠或西伯利亞倉鼠。脾氣非常暴躁。)
我的小黑真古怪一會很溫順一會又脾氣暴躁,它們就是我最喜歡的動物“小倉鼠”。
寫動物的英語作文 篇3
How delicious the bamboo is! Let me eat more, hmm, good!
Hello everybody ! I’m a panda, a very lovely animal and many people love me. And I’m sure you must be a fan of me, aren’t you?
But I’m in danger now, and I’m sure you will help me too, am I right? Let me tell you the story about me: I was born in a forest in the southwest of China. And I like eating bamboo very much, of course all of my family members like eating bamboo. And my brother---a panda was born on the same day just like me are die when he just was born two hours.
Oh my poor brothers! And then my family members and I are not very lucky, the area of bamboo is becoming smaller and smaller, so we don’t have enough food to eat and the human are very terrible, their farms and villages take many places and then we don’t have many places to live in. But we can do nothing to help us. But I think you can. Try your best to tell people to protect us or after a few years they can’t see any panda on the earth!
Animals Need Protecting
寫動物的英語作文 篇4
Dogs, along with cats, are thought to be as the most favored as pets in america today.?this wonderful animal is valued for their companionship, protection and friendship they bestow to their owners. so it is hardly suprising to find dogs or cats on television shows and movies and who could not forget lassie, one of the most famous canine of all time.
For the wonderful companionship this pet gives, it is vital the owner does his or her share of responsibilities that comes on owning a dog.?the owner has the obligation to make certain that their pet receives adequate attention and affection, adheres to a nutritious diet, have regular visits to the vet for a check up or for shots and a plenty amount of exercise to keep them healthy and mentally alert.
Although it takes time and effort to care for your dog, the rewards ultimately pay off.? in return for their owner caring efforts, the dog will grant them unwavering loyalty, their affection and most important of all, the desire to please you.?this is probably the reason why people sometimes prefer this exquisite creature than their own and for years to come canines will remain people favorite pet.
寫動物的英語作文 篇5
When it comes to pandas, people will naturally think of the black eyes of the panda. They are eating bamboos. They are so ridiculous. Let me introduce the pandas in depth.
Pandas eat bamboo, always use the front paw and rear foot catch bamboo, slow, well into his mouth, look very cute I wanted to kiss him, in addition, he also likes egg, picked up the egg on the mouth, two heard the murmur of Xiadu, quickly let you the eye drop.
The panda also likes to lie in to sleep. After he has eaten his belly, he looks for a piece of grass that nobody can lay down to sleep. Sometimes he feels his stomach and turns over a body. I thought he woke up, but I knew later that he was dreaming. It woke up, Monzon rubbed his eyes, go to the pool, bent down, "patter" and water, after drinking, satisfied belch around, burp, exercise, see his twisted body funny that I couldn't put throwing "a laugh out loud, it it looked odd, it seems to find who laughed at him.
I particularly want a panda to go home. It should look so lovely for him. I can't help it.
一說起熊貓,人們自然會想到熊貓黑黑的眼圈,正在吃竹子的樣子,憋得真可笑,這次讓我來深入的介紹熊貓吧!
熊貓吃竹子時,總是用前抓和后腳抓住竹子,慢斯條理地往嘴里送,樣子挺可愛我恨不得去親他一口,此外,他還很愛吃雞蛋,一拿起雞蛋就張大嘴,兩口就聽咕嚕一聲下肚了,快的讓你的眼球都掉下來。
熊貓還很愛睡懶覺,吃飽肚子后,找一塊沒人的草地,躺下就睡,有時候摸摸肚子,翻一個身,我還以為他醒來了,但我后來知道,他這是在做夢。它醒來后,揉揉蒙松的眼,走到水池旁,俯下身子,“啪嗒啪嗒”和起水來,喝完后,滿意的打嗝飽嗝,四處走動,活動筋骨,看他那扭身子滑稽的樣子,我忍不裝撲哧”一聲笑出聲來,它就好奇的張望,好像找誰笑他。
我特別想要只熊貓回家養,應為他的樣子實在太可愛了,令人忍不住啊!
寫動物的英語作文 篇6
There is a butcher Tianwan home, where the burden of the meat has been sold out, leaving only some of the bones. Two wolves encounter on the road, followed closely by Zoulehenyuan.
Afraid of the butcher, pick up a piece of bone thrown in the past. A wolf bones have been stopped, along with still another wolf. Butcher and pick up a piece of bone thrown in the past, the bones after the wolf came to a halt, but the bones have been the first wolf Yougen up. Bones have been thrown over, the two together, like the original as a wolf to catch up.
Butcher is distress, I am afraid together before and after the attack by a wolf. There are wild to see Michael playing a game, the masters of the field to stack firewood in the wheat field to fight, into a hill-like coverage. So Ben butcher in the past to rely on firewood pile below, pick up the butcher's knife to lay down their burden. Two wolves are afraid to move on and stare toward the butcher.
After a while, a wolf straight away and the other as a wolf-like dog in front of the squat. A long time, it seems to be a wolf's eyes closed, looking very relaxed. Butcher all of a sudden jump, with a wolf's head Daopi, Liankanjidao to kill wolves. Butcher about to start now, to firewood behind a pile, saw another wolf is firewood heap holes, drilled in the past want to butcher in the back of the attack. The wolf has got half of the body, only the buttocks and tail exposed. From the butcher cut off the back of the hind legs of the wolf, the wolf kill. Understand this in front of the wolf pretending to sleep, was used to lure the enemy.
Wolf is too cunning, but for a while two wolves have been hacked to death, the animal deception to how much? Only give them increased humor.
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