Cat la suta din masa Pamantului o reprezinta Oxigenul?

21% parca.

Hey! Oxigenul este cel mai raspandit element de pe Pamant(49%).

21% e procentajul de oxigen din atmosfera, masa pamantului nu e numai atmosfera.
The mass of the Earth is approximately 5.98×1024 kg. It is composed mostly of iron (32.1%), oxygen (30.1%), silicon (15.1%), magnesium (13.9%), sulfur (2.9%), nickel (1.8%), calcium (1.5%), and aluminium (1.4%); with the remaining 1.2% consisting of trace amounts of other elements. Due to mass segregation, the core region is believed to be primarily composed of iron (88.8%), with smaller amounts of nickel (5.8%), sulfur (4.5%), and less than 1% trace elements.[10]
Vad ca pe wikipedia zice 30.1% .
https://secure.wikimedia.org/......l_elements

Deci.eu sunt in a 7a. oricum am spus"parca".Bye!