What insect insects are useful on a farm?

How are tube feet adapted to different uses in the groups of echinoderms? Do ladybugs eat budworms? Is swan a decomposer? What is defense for a annelida? Are drone queen and worker larvae alike? What do they cockroach eat? How many hours a day can termites work? how many times do you have to stomp on a cockroach to kill it? What are thin spiny structures that form the skeleton of many sponges? Where do catapillers live? What is the most numerous organism on earth called? What kind of spider has blue fangs and has black and white striped legs with white markings on its black body which was found in NE Wisconsin? Can you tell a monarch caterpillar's from a boy or girl? Why does best quality silk comes from worms that feed on mulberry leaves? What is a black spider with a white horizontal stripe and a red but? What is the fertilization type of a leech? How much legs does a cetipede have? Are red spiders baby spiders? What will happen if underwear gets flushed down the toilet? Is a Arizona jewel beetle a vertebrate or invertebrate?