A fossil is the remains, trace, or imprint of a plant or animal that has been preserved in the earth's crust since some past geologic time.
(A fossil; is; the remains, trace, or imprint of a plant or animal) (a plant or animal; has been preserved; L:in the earth's crust; T:since some past geologic time)
A fossil a plant or animal
is has been preserved
the remains, trace, or imprint of a plant or animal
L:in the earth's crust T:since some past geologic time