The pacific on the west and Atlantic on the east.
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
Answer:
A triangulation station, also known as a triangulation pillar, trigonometrical station, trigonometrical point, trig station, trig beacon, or trig point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity.
~Hoped this helped~