Volatile tasteless and odorless chemical substances that activate a behavioral response from the opposite sex of the same species. Besides sex-attractant pheromones, ants and honeybees have alarm pheromones.
Manyoshu (ten thousand leaves)
Japan's oldest collection of poems, it consists of 20 volumes containing more than 4,500 poems. Manyoshu is believed to have been composed and compiled sometime between the 7th and 8th century.
