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\nA dam stops a river from flowing and forms a lake.  \nAn earthquake causes big rocks to fall.  \nThe wind blows sand into large sand dunes.  \nAll the trees on a hillside are cut down.  \nLarge areas are cleared of plants to make space for farming.  \nCanals are built to bring water to dry desert areas.  \nA river weathers cliffs into canyons.  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n|  |\n|  |\n\nAnswers  \nA dam stops a river from flowing and forms a lake.  \nAn earthquake causes big rocks to fall.  \nThe wind blows sand into large sand dunes.  \nAll the trees on a hillside are cut down.  \nLarge areas are cleared of plants to make space for farming.  \nCanals are built to bring water to dry desert areas.  \nA river weathers cliffs into canyons.  \nhuman-caused  \nnatural  \nnatural  \ncaused  \ncaused  \ncaused  \n\n| human- |\n| --- |\n| human- |\n| human- |\n| natural |","cbCaikVjdsp7asAE","https://ap.wps.com/l/cbCaikVjdsp7asAE","pdf",70112,"English","# Humans Cause Change\n## Exercise: Identify Environmental Changes\n## Answer Key","[{\"question\":\"What is the purpose of this worksheet?\",\"answer\":\"The purpose is to help second-grade students learn to distinguish between environmental changes caused by nature and those caused by humans.\"},{\"question\":\"Give an example of a natural change mentioned in the document.\",\"answer\":\"An earthquake causing big rocks to fall is identified as a natural change.\"},{\"question\":\"How are human-caused changes identified in the text?\",\"answer\":\"Activities like cutting down trees, clearing land for farming, and building canals to bring water to desert areas are categorized as human-caused.\"}]","Humans Cause Change - Grade 2 Science Worksheet | PDF",1791799677]