The rocks in cold regions get cracked in winter. Why?

Machine parts are jammed in winter. Why?

Explain the following : In cold regions in winter, the rocks cracks due to anomalous expansion of water.

How will you explain following statement with the help of the anomalous behaviour of water? In cold regions in winter the pipes for water supply break and even rocks crack

How will you explain the following statements with the help of the anamolous behaviour of water ? (1) In regions with cold climate,the aquatic plants and animals can survive even when the atomospheric temperature goes below 0^(@)C . (2) In cold regions in winter the pipe for water supply break and even rocks crack.