A science class tested ways to clean water after an oil spill. Each group of students was given 100 mL of vegetable oil, 100 mL of engine oil, and 800 mL of water in a rectangular plastic container. Each container also held five
floating wooden cubes (5 cubic centimeters each) representing animals in the water. Each group was tasked with
removing as much oil as possible in a 20 minute period, leaving clean water" in the container, using whatever tools
they brought to class. The results of the "clean-up" are presented in the table below.
Group
1
2
3
4
Vegetable oil removed (ml)
10
110
60
80
Engine oil removed (mL)
20
130
40
70
Based on the results above, which group's data are obviously unreliable?
O group 1
group 2
O group 3

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.