C1 0.0 / 5 ? ChemistryMetals, metal ores and alloysGCSEOCR Created by: sofialawsonCreated on: 02-03-14 18:24 What gasses are the earth made up of? Nitrogen,Oxygen,Argon,small amount ofCo2 1 of 5 Proportion of nitrogen oxygen and argon N=78% , O=21% and A=1% 2 of 5 How was the earths atmosphere formed? Earth’s early atmosphere was probably formed by volcanic activity 3 of 5 d d 4 of 5 d d 5 of 5
Comments
No comments have yet been made