Question

a gas that rises from the earth-natural occurs in rocks-where radioactive material could be present

Answer 1

The gas you are referring to is likely **radon**. Radon is a radioactive, colorless, odorless gas that occurs naturally as a decay product of uranium, which can be found in various types of rocks, including granite and other sedimentary formations. Radon can seep through the soil into the atmosphere and can accumulate in buildings, especially in basements or lower levels, where it can pose health risks due to its radioactivity. It is important to monitor radon levels in homes and buildings, particularly in areas known for higher concentrations of uranium in the soil and rock.