1. In what way are fossils part of the geosphere? 3. What three principles of stratigraphy are evident in this example? _

4. Why are the stratigraphic principles outlined above helpful when interpreting a rock sequence and the fossils it contains?

5. (a) apply the stratigraphic principles above to construct a plausible explanation of the events that

gave rise to the profile represented by the age ordered sequence A-F below. Attach your explanation to this page:

(b) Which layer(s) could you expect to contain fossils? Why?

(c) What unidentified process is currently working on the land? How can you tell?

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.

B. to increase the amount of antibiotics in the body