<span>A system for conducting a scientific investigation
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The correct option is PHYLUM.
Scientists arranged living organisms into groups on the basis of the traits which they share with one another. The lowest rank in the groups is the specie while the kingdom is the highest rank. The ranks are arranged as follow:
Specie < Genus < Family < Order < Class < phylum < Kingdom.
Thus, the phylum is a combination of many classes.
Metabolic asphyxiation is the situation where a person's body has become severely deprived of oxygen, this can arise from carbon monoxide poisoning, drowning, drug overdose, hanging, respiratory diseases, sleep apnea, prolonged exposure to chlorine gas, strangling, seizure amongst other causes. With a deprived oxygen supply, a patient can experience severe brain or organ damage, as the cells are starved of the oxygen, the body will suffer and if left untreated, will result in the patient's death.
