讲动物的ppt英语怎么说(讲动物英文ppt)

百科达人 2024-01-05 views 0

扫一扫用手机浏览

文章目录 [+]

本文目录一览:

动物用英语怎么说 动物英语解释

1、动物,animal。读音:美/??n?ml/;英/??n?ml/。

2、释义:

(1)animal n.动物;adj.动物的。

(2)zoon n.动物;发育完全的个体;n.(Zoon)人名;(英、荷)佐恩。

(3)beast n.野兽;畜生,人面兽心的人。

(4)creature n.动物,生物;人;创造物。

急求非洲野生动物的英文介绍!用作幻灯片使用,不需太长!

The African Bush Elephant is the largest living terrestrial animal, normally reaching 6 to 7.3 metres (19.7 to 24.0 ft) in length and 3 to 3.5 metres (9.8 to 11.5 ft) in height at the shoulder, and weighing between 6,000 to 9,000 kg (13,000 to 20,000 lb).

The largest on record, shot in Angola in 1965, was a bull weighing 12,274 kg (27,060 lb) and standing 4.2 metres (13.8 ft) high, the body of which is now mounted in the rotunda of the National Museum of Natural History in Washington, D.C.. (The museum's website states that the specimen weighs only 8 tons[4].) The Bush Elephant normally moves at a rate of 6 km/h (4 mph), but it can reach a top speed of 40 km/h (25 mph) when scared or upset.

African Bush Elephant and her youngThe animal is characterized by its large head; two large ears that cover its shoulders and radiate excess heat; a large and muscular trunk; two prominent tusks, which are well-developed in both sexes, although more commonly in males; a short neck; a large, barrel-like body; four long and heavy legs; and a relatively short tail.

The animal is protected by a heavy but flexible layer of gray-brown skin, dotted with mostly undeveloped patches of hair and long, black hair at the tip of its tail. Its back feet have three toes that form a hoof, while the number of toes on the front feet have varied between four and five. The front is smoother and less convex than that of the Asian Elephant.

The trunk is the most characteristic feature of the African Bush Elephant. It is formed by the fusion and elongation of the nose and upper lip, forming a flexible and strong organ made purely of muscle.

Little scientific research has been carried out into elephants' cognitive or perceptual abilities. An exception is a recent report that African Bush Elephants are able to use seismic vibrations at infrasound frequencies for communication.[5]

谁能告诉我频临灭绝动物的英文介绍啊,我需要在英语课上做一个幻灯片,

先给你简单介绍,然后再给你一个网站

An endangered species is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters. Also it could mean that due to deforestation there may be a lack of food and/or water. The International Union for Conservation of Nature (IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006.[2] (Note: the IUCN groups all threatened species for their summary purposes.) Many nations have laws offering protection to conservation reliant species: for example, forbidding hunting, restricting land development or creating preserves. Only a few of the many species at risk of extinction actually make it to the lists and obtain legal protection. Many more species become extinct, or potentially will become extinct, without gaining public notice.

Contents [hide]

1 Conservation status

1.1 IUCN Red List Endangered species

1.2 United States

2 Question of ethics

3 Impact on biodiversity and endangered species

4 Species maintaining importance

5 Helping preserve endangered species

6 Captive breeding programs

7 Legal private farming for profit

8 Gallery

9 See also

10 Notes

11 External links

[edit]Conservation status

Main article: Conservation status

The conservation status of a species is an indicator of the likelihood of that endangered species not living. Many factors are taken into account when assessing the conservation status of a species; not simply the number remaining, but the overall increase or decrease in the population over time, breeding success rates, known threats, and so on. The IUCN Red List is the best known conservation status listing.

Internationally, 194 countries have signed an accord agreeing to create Biodiversity Action Plans to protect endangered and other threatened species. In the United States this plan is usually called a species Recovery Plan.

[edit]IUCN Red List Endangered species

Endangered species under the IUCN Red List refers to a specific category of threatened species, and may include critically endangered species.

IUCN Red List of Threatened Species uses the term endangered species as a specific category of imperilment, rather than as a general term. Under the IUCN Categories and Criteria, endangered species is between critically endangered and vulnerable. Also critically endangered species may also be counted as endangered species and fill all the criteria

The more general term used by the IUCN for species at risk of extinction is threatened species, which also includes the less-at-risk category of vulnerable species together with endangered and critically endangered. IUCN categories include:

Extinct: the last remaining member of the species has died, or is presumed beyond reasonable doubt to have died. Examples: Thylacine, Dodo, Passenger Pigeon, Tyrannosaurus, Caribbean Monk Seal, Dimetrodon, Aurochs

Extinct in the wild: captive individuals survive, but there is no free-living, natural population. Examples: Alagoas Curassow, Guinea pig

Critically endangered: faces an extremely high risk of extinction in the immediate future. Examples: Mountain Gorilla, Arakan Forest Turtle, Ethiopian wolf, Darwin's Fox, Javan Rhino, Brazilian Merganser, Gharial, Vaquita

Endangered: faces a very high risk of extinction in the near future. Examples: Dhole, Blue Whale, Bonobo, Giant Panda, Snow Leopard, African Wild Dog, Tiger, Indian Rhinoceros, three species of Albatrosses, Crowned Solitary Eagle, Markhor, Orangutan, Grevy's zebra

Vulnerable: faces a high risk of extinction in the medium-term. Examples: Cheetah, Gaur, Lion, Sloth Bear, Wolverine, Manatee, Polar Bear, African Golden Cat, Komodo dragon

Conservation dependent: The following animal is not severely threatened, but the animal must depend on conservation programs. Examples: Spotted Hyena, Blanford's fox, Leopard Shark, Black Caiman, Killer whale

Near threatened: may be considered threatened in the near future. Examples: Blue-billed Duck, Solitary Eagle, Small-clawed Otter , Maned Wolf, Tiger Shark, Okapi

Least concern: no immediate threat to the survival of the species. Examples: Nootka Cypress, Wood Pigeon, Harp Seal, White-tailed Mongoose, House Mouse

[edit]United States

"Endangered" in relation to "threatened" under the ESA.

Under the Endangered Species Act in the United States, "endangered" is the more protected of the two categories. The Salt Creek tiger beetle (Cicindela nevadica lincolniana) is an example of an endangered subspecies protected under the ESA.

In the United States alone, the “known species threatened with extinction is ten times higher than the number protected under the Endangered Species Act” (Wilcove Master, 2008, p. 414). The US Fish and Wildlife Service as well as the National Marine Fisheries Service are held responsible for classifying and protecting endangered species, yet, adding a particular species to the list is a long, controversial process and in reality it represents only a fraction of imperiled plant and animal life (Wilcove Master, 2008, p. 414).

具体网站

上星期讲了一个关于动物的演讲用英语怎么说读音?

上星期讲了一个关于动物的演讲

Last week I gave a speech about animals

相关文章

黄鹤楼诗词有哪些经典之作?

黄鹤楼,位于湖北省武汉市长江南岸的蛇山之上,是中国历史文化名楼之一。黄鹤楼建于公元223年,距今已有1797年的历史,是中国文化遗...

ppt教程 2024-03-12 阅读1 评论0

关于ppt图片打开缺失怎么办的信息

本文目录一览: 1、mac版ppt为什么图片会缺失 2、ppt图片不显示了怎么办? 3、ppt图片显示不全怎么解决图文教程...

ppt教程 2024-03-12 阅读4 评论0

ppt中怎么给视频倍速的简单介绍

本文目录一览: 1、倍速视频在ppt中为什么不倍速了 2、ppt上录屏可以倍速吗 3、ppt的视频播放太快了,应该怎么办...

ppt教程 2024-03-11 阅读14 评论0
网站地图 | sitemap