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Herbivores Organisms that get energy from eating plants Vs. carnivores How does the conversion of natural forest to human land uses affect an ecosystem? decomposers In a marsh ecosystem, alligators, woodstorks, muskrats, cattails, ferns, and grasses make up a food web. If a disease eliminates the fern population, what would be a consequence? If lizards are eating insects and one year, a disease affecting lizards caused a widespread decline in their population. What is a consequence of this event? Organisms that get energy and nutrient requirements from eating animal tissue There will be a decrease in biodiversity in the ecosystem. organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition. The animals relying solely on ferns for food would die out. an increase in the insect population Which of the following best explains how the Red Imported Fire Ant has affected native ant species in the U.S. that do have predators? What will most likely happen to the population of polar bears as a result of global warming? What determines the carrying capacity of an ecosystem? The Red Imported Fire Ant caused a decline in native ant species by competing for their resources. It will decrease as the habitat suitable for polar bears decreases. the most limited resources required for survival or the needed resource that begins to run out first What changes in the ecosystem will take place during the course of succession? Which of the following is a characteristic of pioneer plant species in general? The smaller pioneer species will eventually be shaded out by the growing trees and will not be able to grow. Their seeds tend to need full sunlight to sprout.