Which of the examples can be explained by a combination of the two laws Boyles law and Charles law? A scuba diver takes about 2250 L of air underwater in a cylinder that he carries on his back.

When cool dry air over a mountain range reaches the plains, it drops rapidly in altitude.
As a result of the altitude change, the air mass is compressed and the temperature increases.

The pilot of a hot air balloon open the vent to allow hot air to escape in order to make the balloon sink down to the ground.

A weather balloon burst when it reaches a sufficiently high altitude.

A helium balloon shrinks when it is taken outdoors in winter temperatures below -10°C.