iron copper steal
what are the raw materials that are needed by a tree to produce carbohydrates
The raw materials needed to make cement are,Calcium oxidesilicon dioxideAluminium oxideIron oxideMagnesium oxideAlkaliessulphurtrioxide.
iron no other materials are needed
Water and subar
Manufacture goods. Raw materials. Foodstuff.
Secondary Industry
Light, water and CO2
stardust (:
Water and Oxygen
Rubber.
secondary industry
Secondary Industry