Researchers are interested in the effect that seaweed chemical defenses have on herbivory.They measure the level of chemicals in green seaweed in areas where there are many herbivores and in areas where there are few herbivores.To their surprise, they find no difference in the chemical makeup of intact seaweed at different locations.Which of the following is NOT a possible explanation for these results?

MCQs on the field of Marine Biology, from a survey of the origin of oceans and their movements to details of marine food webs, life cycles, and marine zonation. As well as on marine environment and ecology, taxonomy and physiology, and contemporary concerns in the field, including human influences on marine systems.