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
Bárbara Mori Bárbara Mori Bárbara Mori Ochoa (; born 2 February 1978) is an Uruguayan-born Mexican actress, model, producer and writer who started her career in 1992 as a fashion model at the age of 14, later she became an actress when she co-starred in 1997 on the smash TV-hit "Mirada De Mujer" with TV Azteca; then, she starred in the soap opera Azul Tequila. Her big break came in 2004, with the telenovela "Rubí" (a remake of the 1968 series) by rival network Televisa, in which she played the main character. She also has starred in several self-produced films and music