The Soviet Union
but the first man on the moon was the US
I think it is called a Case study.
Hopefully it is correct! :)
The correct answer is option b, that is, the addition of carbon dioxide to the atmosphere.
If the concentration of carbon dioxide upsurges in the atmosphere due to the enhanced rate of outgassing, there will be a constant elevation in the global temperature. The elevating temperature and more dissolved carbon dioxide will result in enhanced weathering of crystal rocks as a consequence of faster rate of reactions and greater acidity.
Answer:
The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.