Arthropods are incredibly diverse and include several major groups:
Insects: The largest group of arthropods, with over a million described species. They have three pairs of legs and typically one or two pairs of wings.
Arachnids: This group includes spiders, scorpions, ticks, and mites. They have eight legs and typically lack wings.
Crustaceans: This group includes crabs, lobsters, shrimp, and barnacles. They have two pairs of antennae and biramous (two-branched) appendages.
Myriapods: This group includes centipedes and millipedes. They have numerous body segments and multiple pairs of legs per segment.
Reading Standards for Literacy in Science and Technical Subjects
Craft and Structure
Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.