Behavior is not a main factor
It is covered with a membrane composed of lipids and proteins, lacks a nucleus, and contains<span> hemoglobin—a </span>red<span>, iron-rich protein that binds oxygen. The </span>red blood cells<span> are highly specialized, well adapted for their </span>primary function<span> of transporting oxygen from the lungs to all of the body tissues.
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C.
Ecosystem -> Community -> Population -> Organism
In terms of size.
Prescription drugs are prescribed by a doctor and intended to be used by a specific person that the prescription is for, while over-the-counter drugs are not. The FDA regulates the OTC drugs through monographs. Monographs cover acceptable ingredients, doses, formulations, and labeling.
100% on edge:)