1. 1. Barnacle and whale

2. 2. Cuckoo and Warbler

3. 3. Remora and Shark

4. 4. Ostrich and Gazelle

5. 5. Mistletoe and Spruce

6. 6. Silver fish and army ants

7. 7. Oxpecker and Rhinoceros

8. 8. Mouse and Flea

9. 9. Honeyguide-bird and Badger

10. 10. Cowbird and Bison

11. 11. Human/ Tapeworm

12. 12. Yucca Plant/ Yucca Moth

13. 13. Wrasse fish/ Black Sea Bass

14. 14. Clown fish and Sea Anemone

15. 15. Humans and E. coli

16. 16. Ant and Aphid

17. 17. Trees and Epiphytes

18. 18. Deer and Tick

19. 19. Maribou Stork and Bee

20. 20. Hermit Crab and Shell

21. Some slides might seem to be wrong (bison or crab) but just go with the description it gives.
STAAR can be tricky