Bombyx mori 300 to about 900 m (1,000 to 3,000 ft) long. The fibers are very fine and lustrous, about 10 μm (0.0004 in) in diameter. About 2,000 to 3,000 cocoons are required to make a pound of silk (0.4 kg). At least 70 million pounds of raw silk are produced each year, requiring nearly 10 billion cocoons. Due to its small size and ease of culture, the silkworm has become a model organism in the study of lepidopteran and arthropod biology. Fundamental findings on pheromones, hormones, brain structures, and physiology have been made with the silkworm. One example of this was
Mori language to those of Tolaki. In light of such differences, it is improbable that the Mori Atas and Mori Bawah languages are inherently intelligible. However, because of cultural ties, commerce, and intermingling of their populations through local immigration, Mori Atas and Mori Bawah people are at least familiar with each other's languages, and the languages have been converging in terms of their wordstocks, as can be seen in relatively high percentages of shared lexical similarity. Mori language In its broad sense, Mori is a cover term used to refer collectively to two languages of Central Sulawesi: Mori Bawah and Mori Atas.