“Vadik solemnly took out a large thick book from his briefcase and said: “Alla Arkadyevna, I brought an encyclopedia about insects and something else.” Dad allowed me. He is a collector-entomologist. - Who is en-to-mo-log? – Katka Zemtsova asked. “This means that a person collects insects,” Vadik answered importantly and puffed up. “Entomology,” the teacher explained, “is a branch of zoology that studies insects.” So Vadim is right. But a person can be not just a collector, but also a scientist who studies the life of these amazing creatures of nature...”