Planet Earth : Online IGCSE Chemistry Class

PLANET EARTH:ONLINE CHEMISTRY CLASS Question 1 What is the composition of gases in our atmosphere?   Oxygen 21 per cent oxygen. Carbon Dioxide 0.04% Nitrogen 78 per cent nitrogen¬† Inert Gas Argon makes up about 1% of the atmosphere¬† Question 2 Please list the sources of pollution and their solutions Pollution Sources Solutions Water Pollution […]