Which characteristic of potassium makes it useful for dating rocks? It has a long half-life. It decays at an unknown rate. It produces lead as it breaks down. It can be used to date all types of rock.

It has a long half-life.

Explanation:

answer; i believe the correct answer is (anemia);

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.