Radiometric dating shows that the oldest ocean crust is ____________________ years old and the
oldest continental crust is ____________________ years old. Fill in the blank(s) with the appropriate word(s).
180 million, 3.96 billion
You might also like to view...
That portion of surface runoff that we can generally count on as a stable source of freshwater from year to year is best described as
a. surface water b. drainage basin c. reliable runoff d. watershed e. precipitation
How much of the United States coastline is considered to be depositional?
a. 20% b. 30% c. 60% d. 70%
The combination of role and habitat for a particular species is referred to as its _______________
Fill in the blank(s) with correct word
What is one of the newest techniques employed to measure tides?
a. simple drogues b. pressure-sensing transducers c. drift bottles d. satellites to measure Earth's magnetic field e. acoustic Doppler profilers