Question

14 (decaying uranium atoms in earths crust result in ——
explosions
radon gas
u-235
high level waste

Explanation:

Uranium atoms (specifically U-238, a common natural isotope) in Earth's crust undergo radioactive decay, and one of the intermediate products of this decay chain is radon gas, a radioactive noble gas that seeps out of the crust. Explosions are not a natural result of uranium decay in the crust, U-235 is a specific isotope of uranium (not a product of decay of crustal uranium atoms), and high-level waste is human-generated from nuclear activities, not a natural result of crustal uranium decay.

Answer:

○ radon gas