The ascending temperature in many parts of the world confirms global warming which is an environmental hazard.

Answer: Option A

Rising : going up, increasing, or sloping upward.
Falling : moving from a higher to a lower level, typically rapidly and without control.
Shooting : the action or practice of shooting with a gun.
Mounting : a backing, setting, or support for something.
Ascending : rise or move up through the air.

Synonym of Ascending is Rising