Select one: a. The two species of barnacles do not compete with each other because they feed at different times of day. b. Balanus is a predator on Chthamalus. c. Balanus is inferior to Chthamalus in competing for space on rocks lower in the intertidal zone. d. Balanus and Chthamalus have a +/+ relationship. e. The removal of Balanus shows that the realized niche of Chthamalus is smaller than its fundamental niche.