Aleaf falls into a shallow lake and is rapidly buried in the sediment the sediment change choose to rock over millions of years which type of fossil would most likely be form

Carbon film is your answer

Alpha decay is the loss of two protons and two neutrons from a nucleus. This decreases the total mass number by
4
and the atomic number by
2
.
In the form of an equation this is
218
84
Po
→
214
82
X
+
2
2
He
Looking at the periodic table we can find that element number
82
is lead,
Pb
, so the product element
X
is
Pb
.