Which answer choice best compares how cells in unicellular and multicellular organisms perform the functions necessary for life? A.
The cells in both unicellular and multicellular organisms have specialized functions necessary for life.

B.
The cells in neither unicellular nor multicellular organisms have specialized functions necessary for life.

C.
The cell of a unicellular organism carries out all functions necessary for life and each cell of multicellular organisms has a very specialized function necessary for life.

D.
All cells of a multicellular organism carry out all functions necessary for life and each cell of unicellular organisms has a very specialized function necessary for life.

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c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.