Question 1 1 pts
People try to conserve some resources, like fossil fuels, because they are not
replaceable. Why can't these resources be replaced?
O Processes that make them take a long time
They must be transported long distances
No one can afford to buy more of them
It is impossible to extract more from the earth
hy

d.) circle motion requires a force to give it a centripetal acceleration.

imma come back to you hold on

i think its 100

i hope this !

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.