During el niño, what happens to the coastal marine ecosystems near peru? they thrive. their productivity increases. they collapse they remain unaffected. what factor is most important in causing tropical cyclones to diminish in strength when they make landfall? increased friction with the land surface o increased evaporation o decreased friction with the land surface o reduced evaporation what happens to their winds when tropical cyclones move over warm water? they intensify. they change direction. they weaken. they remain unchanged. o how is sea spray important to tropical cyclones? it decreases evaporation o it increases evaporation. it reduces the air's humidity. it decreases condensation.