How does this relate to agriculture?
Any area close to an ocean coastline will be affected to some extent by the ocean currents that pass nearby. The Gulf Stream helps warm up the air that passes over it, which can directly warm the land near the coast when the wind is blowing towards shore. In this way the warmth of the Gulf Stream can moderate the cold winter temperatures that affect areas farther inland, leading to longer growing seasons for areas near the ocean. The warmth of the Gulf Stream can also provide energy which can power the development of strong low pressure areas along the East Coast. When a hurricane passes over the Gulf Stream, it can also strengthen temporarily from the extra boost of very warm water beneath it, although this effect generally does not last long because the Gulf Stream is fairly narrow and the hurricane passes over it relatively quickly. If the tropical storm passes over a broader area of warm water in the Gulf of Mexico, it can help the storm develop into a major hurricane like Katrina, which quickly strengthed when it traveled over an area of unusually warm water as it approached the United States in 2005. If a hurricane passes over an area of relatively cold water, then it will weaken in wind speed as the main source of its energy is cut off.