Invertebrates are a group of animals that have no backbone
Over 95% of all animals on the earth are invertebrates of one form or another
Invertebrates are found just about everywhere in both terrestrial and aquatic habitats
Over 80% of all invertebrates are grouped into the single phylum Arthropoda that includes spiders, crustaceans, centipedes, millipedes and insects
Insects are a group of invertebrates and are the largest Class of organisms in the world
Insects accounting for over 75% of all animal species
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