Between now and next week, investigate some genuine elements used in radioactive dating of rocks and fossils, and answer the following questions: . a. are some radioisotope pairs more appropriate for dating certain types of samples? if so, which ones and why? can all rocks be dated by radiometric methods? why or why not? what other information can be used to determine the age of rocks or fossils? b. c.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

Answer were lower;

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Loss of funding i think