They are measured in degrees.
Since Earth is roughly a sphere, and there are 360 Degrees in a circle, you can expect that there will also be 360 degrees. And in fact, there are 180 degrees East and 180 Degrees West - which together makes it 360 Degrees.
Answer:
Southern
Explanation:
I think because that is closest to the sea level and as you go higher in terrain height pressure increases.
Explanation:
1. Oxygen, without oxygen no human can live, In space, there Is zero oxygen
2. Water, Astronauts will definitely need some sort of water since nearly every living thing requires It