In the above experimental setup, only the middle bean is able to germinate because it has access to:

Air but not water

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Water but not air

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Both water and air

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Hydrogen

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Solution

The correct option is C Both water and air
The middle bean is able to germinate because it has access to both water and air/oxygen.
The beans at the top and bottom do not germinate. The top bean is in contact with air but not water, so it does not germinate. The bottom bean has access to water but not air/oxygen (since the boiling water removes oxygen), so it does not germinate either.

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