By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standardized conditions for temperature and pressure, two atoms of the element bind to form dioxygen, a diatomic gas that is colorless, odorless, and tasteless, with the formula O 2.xygen constitutes 49.2% of the Earth's crust by mass and is the major component of the world's oceans (88.8% by mass). Oxygen gas is the second most common component of the Earth's atmosphere, taking up 20.8% of its volume and 23.1% of its mass (some 10 15 tonnes).
Riviera, Mediterranean coastland between Cannes (France) and La Spezia (Italy). The French section comprises part of the CÃ´te dâAzur (which extends farther west), while the Italian section is known to the west and east of Genoa as the Riviera di Ponente and the Riviera di Levante, respectively.
Punta Maroma, Riviera Maya, Mexico. The Riviera Maya was originally called the  CancunâTulum corridor , but in 1999 it was renamed as the Riviera Maya with the aid of Lic. Miguel Ramon RamÃ³n Martin martÃ­n azueta who at the time was the municipal President, Of Solidaridad. quintana roohe Riviera Maya was originally called the  CancunâTulum corridor , but in 1999 it was renamed as the Riviera Maya with the aid of Lic. Miguel Ramon RamÃ³n Martin martÃ­n azueta who at the time was the municipal President, Of Solidaridad. quintana roo