'Convection' currents do several things, most notably by creating wind. These currents also move clouds, providing rain, as well as other atmospheric features.
"jamais condamné" means you never were convicted. It is the standard answer. "pas de condamnations" is suitable if you want to speak about current convictions, letting past ones out of the way.
The term 'conviction' means 1: (criminal law) a final judgment of guilty in a criminal case and the punishment that is imposed; 2: an unshakable belief in something without need for proof or evidence
A current is the large-scale movement of water in a specific direction. In the oceans, currents can be thought of as the Earth's circulatory system, moving vast quantities of waters of different...