A body of fresh water is shown below. Which point in this body of water is most likely to have no plants growing?
A. Point C
B. Point D
C. Point A
D. Point B

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament