44.8% oxygen, 21.5% silicon, and 22.8% magnesium. There's also iron, aluminum, calcium, sodium, and potassium. These elements are all bound together in the form of silicate rocks, all of which take the form of oxides.
I believe the answer is true, Hope i helped! :)<span />
Another name for a mesh screen is a sieve.
I believe it is spontaneous generation