Sand??????????????????

Question

What is sand made out of?

Answer 1

silicon dioxide

same substance that glass is made of

Answer 2

That depends on the sand.  Most sand is silica based, from crushed quartz rocks that weather over time.  Things like shells, coral, limestone, and other calcium carbonate materials also weather, creating sand.  Red sand is often weathered sandstone, containing considerable amounts of iron.

Answer 3

silt, crushed shells and bones and rocks and other materials like that

Answer 4

Parrot fish p**p these fish eat coral and c**p sand. Sad but true