I am pretty sure the answer is B:some severe thunderstorms.
Air masses can<span> bring anything from tropical warm and humid days to arctic cold depending on the type of it.</span><span> Fronts form the boundaries of </span>air masses<span> with differing properties.
;)</span>
Answer:
Helium
Explanation:
The sun produces energy by fusing hydrogen atoms into helium atoms. This is a nuclear fusion that occurs at the suns core.