The dating of rock by estimating the amount of radioactive decay that has taken place in its radioactive minerals.
forgot
forgotten
frozen
furniture
gather
gentle
grandfather
greatly
helpful
hidden
honor
husband
Japan
involved
layers
leatherload
lonely
March
meal
medicine
merely
musical
native
Negro
orange
ought
pack
partly
pine
pink
prepare
queen
rabbit
ranch
realize
receive
recently
Saturday
shadow
shirt
shoot
shorter
slipped
Smith
somewhere
