Matching 19. Molds and Casts 20. Freezing
21. Imprint
22. Petrification
23. Amber

a. remains turn to solid rock
b. shows space once occupied by organism
c. often preserves entire insect bodies
d. can show things like foot prints
e. preserves entire animals (Wooly Mammoth)

Electrical charges of ionic bonds

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.