Classification of viruses is based on what 3 components? O A) Nucleic acids, cell membrane, protein spikes B) Nucleic acid type, capsid structure and presence/absence of envelope O C) Cell membrane, nucleus and organelles O D) None of the answers listed are used to classify viruse.

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Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.