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In many places we see evidence that the Earth's atmosphere had to evolve before living things could live on land.In other places, the rock record reveals mass extinctions that occurred when environmental conditions changed so rapidly that organisms could not keep pace with the rate of change. B demonstrate an understanding of the use and conservation of resources and the proper disposal or recycling of materials; and 1.

C use the school's technology and information systems in a wise and ethical manner. A know the definition of science and understand that it has limitations, as specified in subsection (b)(2) of this section; 2.

A analyze the changes of Earth's atmosphere that could have occurred through time from the original hydrogen-helium atmosphere, the carbon dioxide-water vapor-methane atmosphere, and the current nitrogen-oxygen atmosphere 6.

F learn and understand the contributions of scientists to the historical development of Earth and space sciences 6.

Key Terms: paleontology, evolution, fossilization, fossil record, index fossil, cross-cutting relationships, unconformities, fossil succession, rock superposition, original horizontality, geologic time, relative dating, speciation, mass extinction, adaptive radiation Standards: ESS TEKS: 1. C analyze changes in continental plate configurations such as Pangaea and their impact on the biosphere, atmosphere, and hydrosphere through time 1.

C evaluate the significance of the terminal Permian and Cretaceous mass extinction events, including adaptive radiations of organisms after the events 10. A compare the roles of erosion and deposition through the actions of water, wind, ice, gravity, and igneous activity by lava in constantly reshaping Earth's surface 11.

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