Given that duckies were carried around the North Pacific Gyre in one year, about how long do you think it will take for this radioactive material to be present along all coastlines in the world?

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.