The second law of thermodynamics states that thermal energy can flow

[EM?UH?LEE]

from colder objects to hotter objects...? A- by convection
B- only if work is done on the system
C- spontaneously
D- when thermal expansion takes place

Disorder in the universe increases because
A- spontaneous changes produce more order in a system
B- work produces disorder in a system
C- work produces waste heat, which leaves a system
D- all of the above