18) Which of the following statements concerning types of muscle fibre are correct? 1. Three types of muscle fibres are identified: I, Ila and IIx. 11. Type I is less resistant to fatigue than type II. III. Type I is more capable of performing aerobic exercise than type II. IV. Increase of size for type II is more prominent than type I with both being given the same amount of training. O All of the statements OI and III O II and IV OI, III and IV

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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.