Deep lakes warm very slowly in the spring, and small changes in water temperature at the end of winter can lead to large changes in the timing of summer stratification for these lakes. (sciencenews.org)
(Wool only felts in hot water with agitation or with changes in water temperature.) (rachelwolfclean.com)
She discovered that, when grouped, fish are able to estimate subtle nuances, such as changes in water temperature, salinity or concentration and use such metrics to decide, together, on the best path. (aaas.org)