In the nervous system signals are conducted by?

Neurones or nerve cells

Explanation:

Signals or electrical impulses are carried in the nervous system through neurones. These impulses excite the axon of a nerve fibre and initaite series of actions. Note that the point of connection between two neurones is a synapse.

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes