All vertebrates and a few invertebrates. This is a short and sweet. All vertebrates have a closed respiratory system and some invertebrates do as well. The invertebrates I can think of that have a closed respiratory system are cephalopods like an octopus or Annelids like earthworms…. just incase you were curious.
Plagiarism Free Assignment Help
Expert Help With This Assignment — On Your Terms
✓ Native UK, USA & Australia writers
✓ Deadline from 3 hours
✓ 100% Plagiarism-Free — Turnitin included
✓ Unlimited free revisions
✓ Free to submit — compare quotes