Gravity holds planets in orbit because planets are attracted to each other’s gravitational force.
Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.
Minerals are extracted from the Earth through various mining practices.
Half-life can be used to calculate the age of a rock if the amount of the isotope in the rock is known.
The crust is composed primarily of basalt and _____________.a.marblec.magnetiteb.granited.magma
Please select the word from the list that best fits the definition
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