A. MUTUALISM B. PARASITISM C. COMMENSALISM D. PREDATION E. COMPETITION otic 16. Worms inside the cow's body 17. Man and carabao 18. Weeds and rice plants. 19. Lice on a scalp 20. Snake eating the rat 21. Bees and flowers 22. Barnacles enjoy free ride on the whale 23. A change in any factor, whether living or non- living will