All of the following statements are true except: Schist is an example of metamorphic rock.
Metamorphic rocks are formed under heat and pressure.
All metamorphic rocks come from parental rocks.
Metamorphic rocks can also be formed in ocean floors.

Metamorphic rocks can also be formed in ocean floors.

Explanation:

The ocean floor is made up predominantly of basalts and are derived by the cooling an solidification of magma in this environment.

i believe the answer is a.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?