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HW1 - 1 What five essentials are needed for human existence...

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1. What five essentials are needed for human existence? air, water, food, heat, and light. 2. Define the following terms: a. Biosphere: Incorporates all living matter regardless of the physical sector in which it is found. b. Ecology: The study of living organisms within their environment. c. Population: Group of individuals of one kind of organism. d. Carnivore: Any living organism that consumes flesh for sustenance. e. Intensification: Increased concentration of hazardous contaminants as you move up the food chain. f. Mutualism: The existence of two organisms that live together for their mutual advantage. g. Eutriphication: Nutrient enrichment of lakes where excessive growth of plants depletes the dissolved oxygen present in the water. h. Solar flux: The amount of solar energy arriving at the earth’s outer atmosphere. 3 What are the main ecosystem divisions? a. Living 1. Producers 2. Consumers 3. Decomposers a. Non-Living 1. Energy 2. Materials 4. How does plant transpiration affect the hydrologic cycle?
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