I don't know if you have to choose only one answer, because answers 2, 3, and 5. It affected throughout the world, and it also reduced communist nations and changed boundaries.
The sequence is in the following order;
- The sun radiated sunlight (visible) photons
- Photons from the sun strike the earth and become infrared photons
- Earth radiates infrared photons into the atmosphere
- CO2 in the atmosphere absorb infrared photons
- CO2 in the atmosphere emit infrared photons back towards earth
Spatial perspective is to study something in terms of location, distance and direction. Meanwhile, ecological perspective is to study something in terms of environment and social interaction. Good luck!
