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...Data collection on cancer rates in China have improved over recent years (Chen et al., 2016) and show that lung cancer is the most common cancer causing death. However, a considerable amount of evidence needs to be gathered before some hazardous chemical in the environment can be shown unequivocally to be the cause of increased cancers. Activity 1 Pathways for hazardous...

...data he had collected. In doing so, Humboldt turned his back on the prevalent religious explanations for phenomena seen in nature and instead sought process-based scientific explanations for the patterns he saw in his observations. Such a quantitative approach allowed him to investigate how Earth’s surface temperature varies with height, how heat and material is...