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In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

This laboratory exercise is designed to show learners how DNA can easily be extracted from onion cells using simple materials.

In this activity (page 26 of the PDF), learners make observations, formulate hypotheses and design a controlled experiment, based on the reaction of carbon dioxide with calcium hydroxide.

This laboratory exercise is designed to show learners how DNA can easily be extracted from yeast using simple materials.