Oxidation of iron, also known as rusting, will do the trick. ... www.sciencebuddies.org/science-fair-pr... - 32k - ) Experiment from website: Objective The goal of this experiment is to measure the percentage of oxygen in air samples. Introduction We live near the bottom of an ocean of air that surrounds the earth.
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A plug-in is a (sometimes essential) piece of software code that enables an application or program to do something it couldnât by itself. One of the more common plug-ins is Adobe Flash Player. Without Flash Player you wonât, for example, be able to view BBC News bulletins embedded into web pages. Other plug-ins are available for different things. There are plug-ins for social media networking, foreign language alphabets and many other things.