Is a behavior in mating in which one male breeds with a female for a certain period of time and then finds a different mate the following mating season. monogamy serial monogamy polygyny polyandry

Serial Monogamy is a behavior in mating in which one male breeds with female for a certain period of time and then finds a different mate for the following mating season.

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

Ther are many reasons.. is it a multiple choice?