Energy must be transformed in ecosystems because

a.

energy cannot be created or destroyed

b.

an organism’s energy must go somewhere

c.

an organism’s energy must come from somewhere

d.

all of the above

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.