D. respiration by plants and animals
The answer is C : Radioactive dating. I know this because radioactive dating is done by examining the atomic particles found in an object. The atomic particles decay over time at a predictable rate. Scientists are able to measure the rate of decay to establish the age of the fossil, organism, and/or material.
Answer is no
The chemical reaction between iron and oxygen in the presence of moisture or water produces a new substance, which is the rust (iron oxide). In this case, it shows a chemical property.
There is no table, but anything in the column under Flourine (F) has a -1 charge. Hope this helps :)