Ecosystems and Biomes Key Concepts
• The living organisms within a specific area and their physical environment define an ecosystem.
• The major terrestrial ecosystems are classified into units called biomes - large regions characterized by certain conditions, including a range of climate and ecological communities adapted to those conditions.
• Organisms have specific structures, functions, and behaviors that enable them to survive the conditions of the particular ecosystem in which they live.
• Organisms adapt to both biotic and abiotic factors in their ecosystem.
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