Assertion (A) : The trade winds act as the steering flow for tropical storms that form over the Atlantic, Pacific, and Indian Oceans that make landfall in North America, South-East Asia, and India, respectively. Reason (R) : Trade winds also steer African dust westward across the Atlantic ocean into the Caribbean sea, as well as portions of South-East North America. Codes

Wind is the natural movement of air or other gases relative to a planet's surface.

Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global winds resulting from the difference in absorption of solar energy between the climate zones on Earth.