Sagot :
1.oxygen/carbon dioxide
2.nitrogen/water
3.water/olive oil
4.water/sand
5.sand/gravel
2.nitrogen/water
3.water/olive oil
4.water/sand
5.sand/gravel
1. Oxygen and helium
2.CO2 in pop
3.water and oil
4.soil and water
5. Sand and dust
2.CO2 in pop
3.water and oil
4.soil and water
5. Sand and dust