What causes variations to arise in a population? * O Change in the environment
O Random mutation in genes
O Rapid population increases
O Competition for limited resources

Mutation in the genes is the reason why not everyone looks the same. My best bet is the answer is “Random mutations in genes”

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