Both photosynthesis and cellular respiration rely on electron carrier molecules to provide electrons to ultimately produce atp. in photosynthesis, the source of electrons is and in cellular respiration the source of electrons is

In photosynthesis, it needs water for the source of electrons because it is broken down and it releases hydrogen, electrons, and oxygen. in cellular respiration, it needs NADH.

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 answer is letter c