The total amount of energy in the universe never changes, but the amount of energy available for work at any given moment varies tremendously What best explains this change in available energy?
O A Energy can only be created through nuclear reactions
OB Energy is continually changing from one form into another.
O
C Energy is always transferred as heat.
OD. Energy is always converted with 100 percent efficiency

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.