But the small island has a big problem: snakes. There are about 2 million brown tree snakes living in Guam. The snakes likely arrived in the 1940s. They probably slipped(滑行) unseen onto ships and planes heading to Guam. Once there, the snakes laid eggs. Snake families grew. The ...
大多数本土森林动物的数量立即急剧减少。关岛水生和野生动物资源司在20世纪70年代停止了对本地鸟类和蝙蝠的调查,因为这些物种的个体数量很少。存活时间最长的三种本土鸟类和哺乳动物是马里亚纳果蝙蝠、关岛铁路蝙蝠和岛屿雨燕。果蝙蝠和rail是相对长寿的物种,它们之所以能存活下来,可能只是因为一些个体逃脱了捕食,度过了余生;...
and other supplies from New Guinea where these items may have sat unused for some time.The brown tree snake is native to New Guinea and other regions of ustralasia.It is typically nocturnal,and,during the day,rests within crevices and holes that provide good cover.It is commonly found in...
Guam and the Brown Tree Snake Guam is the largest island of Micronesia and,like many islands, once provided a home to a fantastic assemblage of native birds, reptiles,and mammals.The vast majority of these species are now extinct,and the remaining ones are threatened with extinction. Although ...
2.D.词义猜测题.根据上下文内容可知,The brown tree snake has had a devastating effect.句意为棕色的树蛇具有毁灭性的影响.故意为毁灭性的.故选D.3.D.细节理解题.根据倒数第二段 First,the experts put the medicine into dead mice.Then they attached each mouse to a mini paper parachute(降落伞)....
But the small island has a big problem: snakes. There are about 2 million brown tree snakes living in Guam.The snakes likely arrived in the 1940s. They probably slipped(滑行) unseen onto ships and planes heading to Guam. Once there, the snakes laid eggs. Snake families grew. The snakes...
The brown tree snake was first noticed along Guam's southern shore near Apra Harbor.It then spread,somewhat slowly, until it occupied the entire island by 1970.Guam has no native snakes and no native predators that could have controlled tree snake numbers. Instead,the native vertebrates were al...
所属专辑:托福阅读 音频列表 1 TF057-Extinction and the Mammoth Steppe 78 2023-03 2 TF056-Guam and the Brown Tree Snake 52 2023-03 3 TF055-Was There Water on Ancient Mars 50 2023-03 4 TF054-Disturbed and Fragmented Forests 37
snaketoxicantIn 2008, we studied simulated toxicant efficacy to control invasive brown treesnakes (Boiga irregularis) using bait tubes (elongate bait stations that reduce non-target bait take) in a 5-ha enclosure in Guam (U.S. Territory) with a known population of snakes. Instead of toxicants...
30 The brown tree snake was accidentally introduced to the island of Guam during World War II. Since then,this snake has caused the extinction of twelve native bird species by eating their eggs and young. (3)One negative result of this snake's introduction was most likely(1)an increase in...