1.) Can you describe the right way to hold a microscope? 2.) The boy is wondering on what to use to clean the microscope lenses. The lens tissue has been treated to prevent scratching. What should one use to clean? Why?
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Which statement is true regarding weathering in dry environments? a) chemical weathering is absent because of a lack of humidity. b) physical weathering is usually more evident than chemical weathering. c) it is impossible to identify the type of weathering that has occurred. d) physical weathering does not play a significant role in dry environments.