The correct response is:
D nitrogen, oxygen.
Earth's atmosphere is primarily composed of nitrogen (about 78%) and oxygen (about 21%), along with trace elements and gases.
Earth's atmosphere is made up of trace elements and which other two elements?
Responses
A carbon, oxygencarbon, oxygen
B oxygen, siliconoxygen, silicon
C hydrogen, oxygenhydrogen, oxygen
D nitrogen, oxygennitrogen
1 answer