I am not sure about exactly what will happen
after one hour, it may be too soon to notice
anything. But over a longer period of time, the
germinating seeds will absorb oxygen and release
carbon dioxide during the respiration process.
The soda lime should then absorb the carbon
dioxide that is produced while the seeds keep
absorbing oxygen. Over time, the amount of oxygen
in the test tube will decrease, which will cause
the indicator fluid to move towards the test tube
due to lower pressure.
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