Solved by a verified expert:A plant growing in a boggy area and having leaves covered with dead insects can best be described asopportunistic. carnivorous. holoparasitic. nitrogen-fixing.Researchers discover that a species of maple tree cannot survive and complete its life cycle without tiny amounts of cadmium. For this tree, cadmium is a(n)macromolecule. macronutrient. essential element. essential micronutrient.Compared to micronutrients, macronutrients areless essential. more essential. of equal importance. needed in greater quantities.