Answer:
The variation of measures can be attached to temperature conditions, pressure, or the lab equipment used
Explanation:
When checking a measurement, we must keep the same conditions and lab equipment that was used when making the first measure until the last one.
Liquids can change their volumen when measuring under hot or cold conditions, the same happens when pressure changes.
Other possible reason why the measurement changes, is because, we are using decalibrated equipment like pipettes, burettes or a non graduated cylinder.