Consider this research question: Are humans alone in the Universe? Why wouldn't this research question generate testable hypotheses? Choose all that apply. O What are you talking about? We already know the answer to this question - we are not alone! Haven't you seen E.T.? | Aliens are way more intelligent than humans so we are in a perpetual game of hide and seek | Current scientific methods are not sufficient to test a hypothesis generated by this question. | Hypotheses that could be generated from this question are not fully supported by current scientific knowledge -- we just don't know the right mix that leads to the 'spark of life'.

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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.