Sea level (average sea level) is the start point for measuring elevation on this planet and is considered to be the same everywhere. Chicago, however, is not at sea level; rather its mean elevation is 586 feet (179 meters) above sea level.
Mean sea level is the same everywhere. Tidal variations are different in different places. You would need local info for this. The local coastguards could give you this.
It's rising everywhere around the globe, but the Maldives is very much affected because it's at sea level
The same that it always is.. sea level
Yes, if the station is situated at sea level.
No
no
At sea level everywhere on the Earth oxygen makes up about 20% of the atmosphere.
Sea level is the same at all places in North America. Choose any beach.
The Atlantic Ocean is sea level everywhere, with slight variances attributed to the moon's gravitational pull.
The sea level is the same on both the east and west coast. However the sea level is higher near the poles because of the earth's rotation
Sea level is 0 feet, period - that's the reference used for determining land elevation. Sea level is the same in Hawaii as it is in Siberia or anywhere else.