The sky is pale blue in higher altitudes while it is deeper blue in lower altitudes. This is because there is more air molecule closer to earth surface (as a result of higher air pressure) than higher altitudes. The air molecules are responsible for scattering of sunlight hence giving the sky its blue hue. The more the air molecules the more the scattering.
The six countries are
- Gabon
- Congo
- The Democratic Republic of the Congo
- Uganda
- Kenya
- Somalia
They may be Fault Lines or boundaries of Continental Plates.
