hsci 204 midterm with correct answers 100% 2026

hsci 204 midterm with correct answers 100% 2026 what is environmental health science? - Correct Answer the aspects of human health, such as quality of life, that are determined by physical , chemical, social and psychological factors in the environment. -goal is to minimize risk from environmental hazards by identifying areas that need improvement. what is planetary healthy - Correct Answer accounts for the importance of natural systems in terms of averted cases of diseases from human caused populations. Historically, where did information about environmental health hazards come from - Correct Answer 1 : anecdotal observations that workers were experiencing illnesses or diseases with unexpected frequency (Asbestos - measotheloma) 2 : disasters or sudden events that caused dramatic changes in the health of the population What does LD50 stand for and what is it? - Correct Answer Lethal dose 50, the dosage causing death in 50% of exposed animals What does NOAEL stand for and what is it? - Correct Answer No observed adverse effect level, the highest dose at which the adverse effect is not observed. NOAELs are like cliffs, once we cross that point, bad things start to happen What does LOAEL stand for and what is it? - Correct Answer Lowest observed adverse effect level, lowest dose at which the adverse effect is observed What was the first occupational cancer that was identified and by who - Correct Answer -chimney sweepers: young boys where small enough to fit in chimneys and where exposed to carcinogenic things -Percival Pott a british surgeon examined this