Need this ASAP!! Which of the following energy resources are replaceable through biogeochemical cycles and also provide clean energy?
Geothermal energy
Biomass energy
Nuclear power
Hydropower

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.

the correct answer would be b) volume versus temperature, because they are also directly proportional.