How did geologists decide where one division of the geologic time scale ends and the next begins?
the law of superpostion
events in the history of life on earth, like mass extinctions
they divided the time equally between eras
the placement of fossils throughout the surface layers of earth
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Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.
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28. how many linkage groups will be formed by homogametic organism with 28 chromosomes?
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Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.
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How did geologists decide where one division of the geologic time scale ends and the next begins? <...
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