keepled examine= compare hold assemblage to an experimental class *control group does not con the factor that you are testing *experimental group does have the factor be tested Types of Microscopes: 1. debile= the ones most apply in classrooms 2. electron= uses a beam of electrons instead of percipient; around 200,000 times stronger than light microscopes If you want to get a ripe essay, order it on our website: Ordercustompaper.com
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