求江豚的介绍,要英文的~单词不要太深~
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/14 00:08:45
求江豚的介绍,要英文的~单词不要太深~
要包括它濒临的原因~还有习性什么的
要包括它濒临的原因~还有习性什么的
Order: Cetacea
Suborder: Odontoceti
Family: Phocoenidae
Genus: Neophocaena
Species: phocaenoides
Distribution and Habitat
Finless porpoises are widely distributed in the coastal waters of Asia, from the Persian Gulf, east and north to Central Japan and as far south as the northern coast of Java and the Strait of Sunda (see map). Finless porpoises are described as a coastal, estuarine or riverine species and they are usually sighted near the coast.
Natural History
Finless porpoises are slender and have no dorsal fin. In its place along the mid-dorsum is a low dorsal ridge which is covered by thick denticulated skin. Newborn finless porpoises are mainly black with some grey on the dorsal ridge area. These young porpoises quickly become lighter and after 4 to 6 months attain the uniform light grey colour of adults. Both male and female finless porpoises grow to lengths greater then 1.55 m. Although there is a great deal of variability between populations of finless porpoises, males become sexually mature at 4.5 - 9 years and females at 3-7 years. Finless porpoises are opportunistic feeders, consuming a wide variety of fishes, shrimps and cephalopods throughout their range.
Status and Protection
Finless porpoises are found yearly throughout their entire range, but in some areas exhibit seasonal movements and changes in local abundance. These changes in local abundance and distribution are not well documented for most regions. Finless porpoises are currently listed in the IUCN Red List of Threatened Species as a Data Deficient species throughout their range, except in China where they are currently listed as Endangered.
Threats to the Species
The greatest threat to finless porpoise populations is incidental mortality in fishing gear. These animals are taken in a variety of driftnet, gillnet, trap net and trawl net fisheries throughout their range. The extent of bycatch in many areas is not well documented. They are also caught in "rolling hook" gear (lines of iron hooks set across the flow of the river) in the Yangtze River, China.
Suborder: Odontoceti
Family: Phocoenidae
Genus: Neophocaena
Species: phocaenoides
Distribution and Habitat
Finless porpoises are widely distributed in the coastal waters of Asia, from the Persian Gulf, east and north to Central Japan and as far south as the northern coast of Java and the Strait of Sunda (see map). Finless porpoises are described as a coastal, estuarine or riverine species and they are usually sighted near the coast.
Natural History
Finless porpoises are slender and have no dorsal fin. In its place along the mid-dorsum is a low dorsal ridge which is covered by thick denticulated skin. Newborn finless porpoises are mainly black with some grey on the dorsal ridge area. These young porpoises quickly become lighter and after 4 to 6 months attain the uniform light grey colour of adults. Both male and female finless porpoises grow to lengths greater then 1.55 m. Although there is a great deal of variability between populations of finless porpoises, males become sexually mature at 4.5 - 9 years and females at 3-7 years. Finless porpoises are opportunistic feeders, consuming a wide variety of fishes, shrimps and cephalopods throughout their range.
Status and Protection
Finless porpoises are found yearly throughout their entire range, but in some areas exhibit seasonal movements and changes in local abundance. These changes in local abundance and distribution are not well documented for most regions. Finless porpoises are currently listed in the IUCN Red List of Threatened Species as a Data Deficient species throughout their range, except in China where they are currently listed as Endangered.
Threats to the Species
The greatest threat to finless porpoise populations is incidental mortality in fishing gear. These animals are taken in a variety of driftnet, gillnet, trap net and trawl net fisheries throughout their range. The extent of bycatch in many areas is not well documented. They are also caught in "rolling hook" gear (lines of iron hooks set across the flow of the river) in the Yangtze River, China.
求一篇bbox的英文介绍、作演讲的、尽量不要用太高级别的单词、谢谢
介绍宠物的小作文要英文,不要太长,也不要太难,要40个单词左右就行咯~
介绍江豚的英语作文50词
一道或两道菜的英文介绍,要写出步骤,First,Then这一类的,单词不要太难,
关于龙卷风的简短的英文介绍,单词不要太难,
求费雯丽的英文简介如题,字数不用太长,要以作文的形式介绍,最好提到她主演的乱世佳人和魂断蓝桥介绍不要太复杂啦,单词简单些
求深圳 海上世界 旅游的英文介绍 要带翻译的 一百字以内 水平不要太高
求一篇英文介绍 阿伦 艾弗森的 120词左右 词汇不要太难 急
求一篇英文的公司介绍公司尽量不要太常见了,字数不用太多,
角马大迁徙的英文介绍和文章!不要太生僻!
皮影戏的一份英文介绍,不要太难
有关动物的英文介绍不要太难