BIOLOGY 1M03 Chapter Notes - Chapter 54: Nutrient Cycle, Ozone Depletion, Resource Consumption
15 Dec 2016
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A biological community plus all of the abiotic factors (climate, energy, soil, nutrients) influencing that community. Primary producers (autotrophs, self feeding) can synthesize their own food using sunlight or chemical energy. plants take in co2 and energy so complete photosynthesis. Decomposers feed on dead organisms or their waste products. You must have these four components to have an ecosystem. : net primary productivity (the energy invested into new tissue) Varies among geographic regions (more biodiverse biomes have better npp) ***design an experiment to determine npp in the open ocean. She brought public awareness to environmental issues such as the negative impact of ddt pesticide. Called silent spring because ddt kills birds and she wanted to embody what it would be like if we had a spring without singing birds. Trophic levels: the steps in the food chain. 54. 2 trophic levels identify steps in energy transfer. 80. 7% bodily maintenance, 17. 7% excretion, 1. 6% growth and development.
