How would loss of negative feedback influence calcium release from the ER? Calcium channel would not shut down in presence of high levels of calcium Refractory period would increase Calcium would not release from the ER IP3 would not bind to the calcium channel Calcium pumps would not reduce local cytosolic calcium concentration

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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.