Why do aquatic animals not experience mechanical shocks?

Due to which property of water does the water in lakes or oceans not freeze completely?

Match the Column-$I$ with Column-$II$ with reference to soil water.

Column-$I$	Column-$II$
$i$. Gravitational water	$a$. Water absorbed and held by soil particles.
$ii$. Hygroscopic water	$b$. Water present in pores between soil particles.
$iii$. Combined water	$c$. Water that percolates deep into the soil.
$iv$. Capillary water	$d$. Present in the form of hydrated oxides of silicon or aluminium.

If you are provided with two tubes ($A$ and $B$),where one is narrow and the other is relatively wider,and if both are immersed in a beaker containing water as shown in the figure. Why does $B$ show higher water rise than $A$?

Why is water essential for plants?

What should be remembered in the matter of transport/movement?