Drag each tile to the correct box.
Arrange the unstable isotopes in decreasing order based on the length of their half-life.
carbon-14 (5.73 m 103 years)
argon-39 (2.69 102 years)
hafnium-182 (9* 106 years)
krypton-81 (2.29 * 105 years)
calcium-41 (1.03 * 105 years)
iron-60 (1.5 106 years)

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

The basic building blocks of dna and rna are nucleotides