2. For the purpose of finding if 'mineral salts are needed for seeds to germinate', a student was given the following four setups as shown in the picture. Which two setups should he chose to full fill the purpose?
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All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
Hence, the correct answer is 'All of the above'
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