-Refer to Figure 7

question 20

Multiple Choice

-Refer to Figure 7.6.Which graph represents decreasing returns to scale?

• A) A
• B) B
• C) C
• D) Both graph A and graph C

---

Definitions:

Red Bone Marrow

The soft, spongy tissue inside bones that produces blood cells.

Hydrostatic Skeleton

Of soft-bodied invertebrates, a fluid-filled chamber that contractile cells exert force on.

Sea Anemones

Marine, predatory animals of the order Actiniaria; they are notable for their colorful appearance and a body structure similar to a flower.

Anal Sphincter

A ring of muscle surrounding the anus that helps control the passage of feces out of the body by contracting and relaxing.