That's a #41#### good question!
Googling has told me that water has its lowest volume at 4°C, so any lower than that and it'll start to rise; from here; http/answers.yahoo.com/question/index?qid=20071001184812AAsgXxD
Oooh, apologies for the 'swear'
Googling has told me that water has its lowest volume at 4°C, so any lower than that and it'll start to rise; from here; http/answers.yahoo.com/question/index?qid=20071001184812AAsgXxD
Oooh, apologies for the 'swear'