Changes or conditions in the air at a certain time and place

Dall of the above all of the choices make sense

Answer metamorphic rock;

Explosive eruptions are the most hazardous, involving large volumes of tephra and gases emitted from the volcano. lahars, pyroclastic flows, ashfall, and many other volcanic hazards are commonly associated with explosive eruptions. explosive eruptions are very dangerous. basically, any form of hazard can occur.

The fact that the earth goes through natural cycles for example the ice age some scientists belive that it is just another cycle