Which piece of evidence does not support the the theory that water came much earlier in earth’s history
A. examination of fossil remains
B. examination of carbonaceous chondrites
C. examination of rocks on earth
D. examination or asteroids

a. a clone will be physically identical to the original, but won’t be genetically identical

have a good day!

the role of the microscope world in creating new materials .

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.