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chapter1 - Invitation to Biology Chapter 1 Impacts Issues...

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Invitation to Biology Chapter 1
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Impacts, Issues: Lost Worlds and Other Wonders Discovering new plants and animals on an expedition to New Guinea
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1.1 Life’s Levels of Organization We understand life by thinking about nature at different levels of organization Nature’s organization begins at the level of atoms, and extends through the biosphere The quality of life emerges at the level of the cell
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Making Sense of the World Nature is everything in the universe except what humans have manufactured
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A Pattern in Life’s Organization Atoms Fundamental building blocks of all substances Molecules Consisting of two or more atoms Cell The smallest unit of life Organism An individual consisting of one or more cells
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A Pattern in Life’s Organization Population Individuals of the same species in the same area Community Populations of all species in the same area Ecosystem A community and its environment Biosphere All regions of the Earth where organisms live
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Levels of Organization in Nature
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Levels of Organization in Nature
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Fig. 1-2a, p. 4
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Fig. 1-2b, p. 4
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Fig. 1-2c, p. 4
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Fig. 1-2d, p. 4
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Fig. 1-2e, p. 4
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Fig. 1-2f, p. 4
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Fig. 1-2g, p. 5
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Fig. 1-2h, p. 5
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Fig. 1-2i, p. 5
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Fig. 1-2j, p. 5
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Fig. 1-2k, p. 5
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Fig. 1-2 (a-f), p. 4 atom molecule cell tissue organ organ system Stepped Art
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