1. The Mystery of Hummingbirds (Long-billed Hawkmoth) Hummingbirds (class Aves) are as large as swallows and smaller than wasps. The plumage color is usually extremely bright, the beak is slender and tubular, and the tongue can be retracted freely. It often flies betwee...
(1) Silkworms and silk There are many mulberry trees growing in the vast wilderness of our country, including trees and shrubs. There are several types of insects that live on mulberry trees, and they feed on the mulberry leaves or the trunks. Among these insects, there i...
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