Biochemistry is the study of . One part of this discipline includes describing the rearrangement of atoms and molecules inside our cells as they are used to create new substances. Fill in the blank!

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen