Aluminum, glass, plastic, lead, gold, silicon, steel and copper are used to make the iPad (plus other trace elements).
Clay
Any capacitive material will make the touchscreen of the iPad respond.
The radiation comes from the material used.
Dry graphite
According to rumors yes apple is making an iPad 3. It is expected to be released early march.
The material used in making a puffer coat is typically a synthetic fabric called nylon or polyester, filled with insulating material such as down or synthetic fibers to provide warmth and insulation.
i think from different gases !!!!!
It is used for making petrochemicals
Leather and plastic
Silicon
tungsten or sometimes copper
mud and fibers