The Colosseum was man-made, constructed by the Romans between AD 70 and 80. It is an iconic amphitheater built from concrete and stone, designed for public spectacles such as gladiatorial contests and mock sea battles. Its engineering and architectural features reflect the advanced skills of Roman builders.
Colosseum.
Potassium is naturally made
naturally occurring.
Thallium is a naturally occurring element in the Earth's crust. It is not a man-made element.
No. It's man-made.
No - it's a man-made object. But the stuff it is made from is naturally occurring.
yes, concrete is man made, stone is naturally ocurring.
Phosphorus is naturally occurring. It is found in rocks
No its naturally produced
No it is naturally occuring
natural
No - it's a man-made object. But the stuff it is made from is naturally occurring.