How did the railroad help change the prairie? A. The railroad broke up the long, continuous stretches of the grassland where animals could roam freely.

B. They used coal as a fuel, which caused pollution that harmed the grasses.

C. Railroads frequently ran into bison and other animals on the tracks, which disrupted the ability of the animals to roam freely.

D. Railroads were very noisy, which scared animals and disrupted their living patterns.

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Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.