What best describes the volcanic process of magma with dissolved water vapor and other gases as it nears the Earth surface? Pressure on the molten rock lessens and the gases quickly dissipate into the atmosphere.
Explosive gases such as methane and ethane combine with oxygen and ignite violently in the atmosphere.
Pressure on the molten rock lessens the rock rapidly expands to the point that it explodes and ejects into the atmosphere.
Pressure on the molten rock lessens and the gases dissolved in rock can bubble and expand rapidly causing violent eruptions.

Pressure on the molten rock lessens and the gases dissolved in rock can bubble and expand rapidly causing violent eruptions.

Explanation:

that's just how it works lol. hope this helps :]

1250 m

Explanation:

This situation is related to vertical movement and can be modelled by the following equation:

Where:

is the height of the alien spaceship at a given time

is the initial height of the alien spaceship (we are told it was already 500 m above the ground)

is the initial velocity of the alien spaceship, that is also constant. This means the velocity is the same during the whole motion and there is no acceleration.

is the time

is the acceleration

Rewritting the equation with the given conditions: