Rocks in continental crust are as old as blank years a.200 million b.44 million c.4.4 billion

Option (C)

Explanation: The rocks at the continental crust are present since a long time, and the oldest rocks so far encountered from the continental crust is approximately 4.4 billion years old.

          This has been determined by the Uranium-Lead dating method (Ur₂₃₈-Pb₂₀₆).

Oceanic rocks are estimated to be of very recent age i.e about only 180 million years old.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

the areas around the equator