classify, invertebrate, respiration

definitions & notes only words
  1. classify
    arrange or order by categories
  2. invertebrate
    any animal lacking a backbone or notochord
  3. respiration
    a single complete act of breathing in and out
  4. locomotion
    the power or ability to move
  5. chelicera
    either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing
  6. gradual
    proceeding in small stages
  7. disperse
    move away from each other