The "mechanisms that control homeostasis are activated in response" to

I believe it is the 'negative feedback mechanism' 

Hope this answers your question.

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

Cuz i said so. which gives it to b