Which best describes a fossil that was discovered in rock at the base of a cliff?

a. it is likely younger than a fossil discovered in rock at the top of the cliff
b. it is likely older than a fossil discovered in rock at the top of the cliff
c. it is likely younger than a fossil discovered half way up the cliff
d. it is most likely an index fossil

The correct answer is B.it is likely older than a fossil discovered in rock at the top of the cliff

That's because those fossils were covered with land when the animals died so new land was created over them, and so until the top where the youngest animals would be.

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.

They make up examples of physical properties