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The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.
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How can an organ, such as the lungs, work for multiple body systems?
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Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?
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