Kelli drew a diagram to compare cast and imprint fossils. Which label belongs in the area marked Y?

A)Involves minerals replacing remains of organism
B)Takes millions of years to form
C)Gives evidence of organism's activity
D)Involves mold filling with minerals and sediment

A. radioactive dating

Could you elaborate?

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11