What is usually (but not always) related to the metabolic processes of living organisms in its organic form? In its organic form, (BLANK) is usually (not always) related with the metabolic processes of living organisms.

All organisms exhibit metabolism. e.g. protozoans, algae. fungi, bacteria. etc.

Metabolic reactions cannot happen in a cell-free system. While isolated in-vitro reactions carried out in laboratories cannot be termed as metabolism because they are conducted in a controlled environment and are simulated.

But such reactions can be termed as living reactions because they are the reactions going on inside a living system.

answer; i believe that the best answer is (secondary cardiac arrest due to

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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