A mountainer climbing on the Everst, experienced the following facts. Explain each fact with the scientific reason `:` (1) He found fishes alive below the ice (2) Time required for cooking was more as he went higher (3) He saw many cliffs falling suddenly ( 4) He saw tubes carrying water broken.

Explanation

Explanation `:`
(1) Water expands as its temperature decreases from `4^(@)C ` to `0^(@)C `. Water is converted into ice at `0^(@)C ` . The density of water is more than that of ice .Fishes can remain alive in the water ( at `4^(@) C )` below that ice.
(2) At high altitude, atmospheric pressure is low and hence water boils at a temperature lower than its normal boiling point. Therefore, the time required for cooking food is more higher altitudes.
(3) Water expands while freezing. Hence, the water present in the crevices of the rocks exerts a tramendous pressure on the rocks, while freezing .Therefore, the cliffs falls.
(4) Water expands while freezing. Hence, the water in the tube exerts a large pressure on the tube, while freezing .Therefore, the tube carrying water breaks.