<span>Radon may cause lung cancer when inhaled.
a: is formed by the breakdown of the ozone layer
b: may cause lung cancer when inhaled
c: binds with hemoglobin, preventing binding with oxygen
d: contributes to the breakdown of the ozone layer
e: in the atmosphere limits the availability of sunlight for plants</span>
Yes, I believe that's true.
It is the capital of Malta
The answer is 0/40 this is because you can have 40 cards when they are numbered from 1-50
