Which of the following is an object used in relative dating? a. carbon-14 b. daughter isotope c. index fossil d. parent isotope

Your answer is A) Carbon-14 
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Answer;

A. carbon-14

Explanation;Relative dating involves the process of determining the age of an object in comparison to another without determining the absolute dating. It may be defined as a method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock. Carbon-14 is a type of carbon that undergoes radioactive decay at a known rate, and thus may be used in relative dating.The amount of carbon incorporated in an organisms (plants and animals) when its alive stops when an organism die and the amount of carbon-14 begins to decrease at death as it undergoes radioactive decay. This can be used to determine the age of fossils.

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.