Giant silk moths are also impacted by various pests and parasites. One of them is the tachinid fly, which lays eggs on caterpillars, eventually killing them. Furthermore, these moths face challenges from invasive species likegypsy moths, which can outcompete them for resources and increase their ...
These tufts—called byssus—can grow up to 2 1/3 inches, and their fibers are unusually strong and light. People have been collecting byssus since antiquity, to spin into thread and weave it into fabric, known as sea silk.What animal makes sea silk?
What Makes Spider Silk Fibers Stronger: From Molecular-Crystallite Network to Hierarchical Structure A Hierarchical Network (HN) model of soft matter was put forward to explain the mechanical properties of animal silk fibers. At the nano-micro level, the silk fibers consist of a bundle of twisted...
animalspecieshaveappearedanddisappeared 8 sincelifebeganontheEarth,whichisa(n) 9 phenomenon.However,animalspecieshavebeen 10 atamuchfasterrateforabouta centurynow 11 humanfactorssuchaspollution. Certainphilosophersandscientistskeeprepeatingthatifwedon?tsaveanimals,howwewill beabletosaveourselves.Abetter 12 ofan...
The larva of the Bombyx mori moth is the silkworm. Silk is a type of natural fibre also an animal fibre. Silkworm is responsible for the spinning of silk. A silkworm is reared to obtain silk.
Some animal rights activists protest this practice; they contend that it’s possible to harvest silk without killing silkworms, but not much credence is given to this position. After the cocoons have been heated, silk producers carefully unravel the threads that the silkworms meticulously put into...
kind ⑵ a kind of 一种 It is a kind of animal with long ears. ⑶kind of = a little / a bit 有点儿;有几分 We feel kind of cold here in the room. 【解析 2】join/join in/take part in 辨析 join= 加入某种组织、团体、机构并 join the army / party be a 成为其中...
1.What animal is endangered? A. B. C. 2.Why is he anxious? A. B. C. 3.What am I looking for? A. B. C. 4.What is Grace’s favorite? A. B. C. 5.What housework does Linda always help her mother do at home? A. B. C. (二)录音中有5个句子,每个句子听两遍,然后在每小...
新视野大学英语(第三版)第二册读写教程、视听说教程全部答案+教案(Units1-7).pdf,New Horizon College English BOOK 2 (3rd Edition) Unit 1 Text A Ex .l Understanding the text 1、Be au se he is tired o f listening to his father and he is not interested in gram
What animal group are spiders in? Spiders: Spiders are related to insects, crustaceans and centipedes. These animals are known for their web making ability. As hunters, they capture prey using silk and externally digest their captives. Answer and Explanation:1 ...