Earth borers are huge, amazing tools that help build tunnels. Readers will dig deep underground with these massive machines to learn how they chew up rocks and dirt and help engineers build new things far below Earth’s surface. Vibrant full-color photographs showcase these large borers and the tunnels they create, which are used by cars, trucks, and even trains to take people from place to place. This innovative title also looks at the environmental impact these machines have on our lives and potential problems they cause, such as sinkholes.
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Limba Engleză ● Format PDF ● Pagini 32 ● ISBN 9781482457865 ● Editura Gareth Stevens Publishing LLLP ● Publicat 2016 ● Descărcabil 3 ori ● Valută EUR ● ID 6899791 ● Protecție împotriva copiilor Adobe DRM
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