Name: _______________________________Exploring Trophic Cascades: Click and Learn Sophia Leite 1.Define Ecosystem: The complex of a community of organisms and its environment functioning as an ecological unit.(Click the arrow on the right) Watch the video on sea otters: 2.Describe the importance of kelp to the coastal zones of the pacific: Kelp forests are composed of rapidly growing large brown algae. This highly productive habitat supports a wide variety of fishes, invertebrates, and marine mammals forming the basis for a rich ecosystem. Kelps are found in subtidal regions throughout the world where nutrients, light levels, temperatures and ocean currents permit.3.What happened to the kelp forests on islands where there were no otters?Sea otters live in a cold ocean environment and rely on two traits to keep warm: a dense fur coat for insulation and very high metabolism to generate body heat.(Click on the X on the upper right) (Click the right arrow once then again to answer the question: 4.How are sea otters considered a negative effect on urchins? How are urchins a negative effect on kelp?
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