Answer:
Biological death occurs after 4-6 minutes of clinical death which occurs when the heart stops pumping. ... An automated external defibrillator is a defibrillator that delivers an electrical shock to the heart to restore the normal electrical pattern and rhythm.
Explanation:
Enviromental because it has to do with pollution.
If there is an option for Vitamin B12 then that will be your answer.
Diet do not work and they only cause more harm than good.
