1. what do producers release when they conduct photosynthesis? 2. what happens to oxygen when released in the atmosphere?

3. Where do producers get the carbon dioxide they need?

4. In what ways can humans impact the exchange of carbon and oxygen in the atmosphere?

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

Idont understand i'm sorry