A huge, jagged rock sits atop a windy cliffside. Over a period of many years , how will the rock most likey change.

It will become smaller and less smooth

Explanation:

We are told that the jagged rock sits on top of a windy cliffside. This means that it will be subjected to serious wind erosion and as such it will experience the phenomenon called weathering whereby the softer parts of the rock will get eroded faster than the harder parts.

This weathering will lead to a general reduction in the size of the rock and thereby making the surface to become rough and uneven.

Thus, the given rock will become a lot smaller and also a lot less smooth after a definite period of time.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2