If a liter of water is heated from 20°c to 50°c, what happens to its volume?

Wind is related tot he movement or warm cold air masses which kind of heat transfer does this represent

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering