Three different types of liquids - water, glucose and salt water are also provided to test the reactions of the substances to these liquids.
Why were these liquids chosen?
Water:
The substances may also breathe. If air bubbles are seen coming out from the water, this proves that the substance might be breathing. If the water level decreases, it also means that the substance is a living thing as it needs water to survive.
Glucose:
The substance might take in the glucose and reproduce, therefore proving that it is a living thing.
Salt Water:
The substance may need salt water to survive.
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