These bodies of water were formed by huge chunks of ice which broke off the retreating glacier and melted in depressions forming kettle lakes.
(These bodies of water; were formed; by huge chunks of ice) (huge chunks of ice; broke off; the retreating glacier) (huge chunks of ice; melted; L:in depressions) (depressions; forming; kettle lakes)
These bodies of water huge chunks of ice huge chunks of ice depressions
were formed broke off melted forming
by huge chunks of ice
the retreating glacier
L:in depressions
kettle lakes