all lakes don't stay the same shape some water drifft off and some evaperate.
pressure of the depths are the same
yes
Pollution and the shape of lakes.
solid
a square,circle,pentagon
Because of the Earths rotation, Happy astronomy! :)
No
Yes. (Unless you were to add to or remove form the object to change the shape. For example, a book will not have the same mass if you rip some pages out.)
Liquids cannot stay the same size size because the particles inside the liquids have some bit of space to move to a different shape and to change the size.
No. Circular lakes are actually rare. Lakes typically follow the contours of the low lands in which the form.
The shape can change, the volume will stay the same.
If the scale factor between two shapes is 1, the shapes are congruent.