Verwering gesteente verandert

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Verwering - gesteente verandert. • Flipping the classroom. • Over de afbraak van gebergten door middel van verwering. Dat er een verschil is tussen mechanische en chemische verwering (met uitleg) en hoe grotten ontstaan.","styleRuns":[{"startIndex":0,"length":217,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"}]},"headerRuns":[{"startIndex":0,"length":217,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"}]}},{"itemSectionRenderer":{"contents":[{"messageRenderer":{"text":{"runs":[{"text":"Comments are turned off. 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