What is anaerobic decomposition?

 What is the fullform of Xes2

 What is sea scum?

 What is the difference batween protoplasm and cytoplasm?

What is Hemihydrate Calcium  Sulphate ?

•  what is Ferro - Ferric oxide 
• What is pyrites 
• Are minerals different from metals

 How is talc formed ?

 Is gabbro a type of basaltic rocks?

tell me something about gems and diamonds different

difference between gem and diamond

 What are the problemes formed by excessive use of fossil fuels?

 ia lava the same as magma

 Sir, my questions are not comning in ask and answer

 In this vedio which one is needed and which one is not?

 write short notes on fosils fuels