Directions / Procedure: Each box is composed of two species. Put a plus (+) sign next to the name of species if it is positively affected in the relationship, minus sign (-) if the species is negatively affected in the relationship. If the species is neither harmed nor benefited in the relationship put a (0) next to the name. → After putting a signs identify the relationship exists between the species in each box. Whales Fleas Orchid Barnacles Dogs Trees Clown Fish Butterfly Human Sea Anemone Flower Lice
