. How does decompression make someone sick?
Decompression makes dangerous gasses dissolve more completely in the bloodstream.
When gasses in the blood decompress they make the blood thinner, which makes the diver dizzy.
Decompression presses on the diver’s stomach and makes him or her feel sick.
The expanding gas creates bubbles in the blood that can block the flow of oxygen.

um i think it might be a car?

here are some of the ways in which chemical and nuclear reactions differ.

explanation:

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.