The entropy of a living insect, with its highly ordered structure, decreases, but the entropy of its waste products (such as the carbon dioxide and water vapor released, and the liquid and solid material excreted) increases more than the entropy of the insect decreases. Consider this example and select the statement that is NOT a valid expression of the second law of thermodynamics.
The entropy S of the universe can never decrease.
It is not possible to create an engine or process which results in a decrease in entropy in any object.
Randomness, or disorder, in systems tends to increase over time.
In a reversible process there is no net change in entropy; in an irreversible process the net entropy increases.