Which of these is the subject of study in thermodynamics? Choose the correct answer. a) energy changes
b) only physical changes
c) only chemical changes
d) structure of atoms and molecules

What must happen before a body cell can begin mitotic cell division

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

Ab c or d ? i’m not sure what the answer is