Which two scenarios illustrate the relationship between pressure and volume as described by Boyle’s law? 1. The pressure in a closed bottle decreases when the bottle is squeezed.
2. The volume of an underwater bubble increases as it rises and the pressure decreases.
3. The pressure increases in an inflated plastic bag when the bag is stepped on.
4. When air is blown into a balloon, the pressure and volume both increase.

2) The volume of an underwater bubble increases as it rises and the pressure decreases

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