question: Suppose that Mary hasn't started smoking yet. If you measured the oxygen levels in her blood now and compared them to oxygen levels after she's been smoking for 20 years, what would you find?
choices.text: less oxygen in her blood now more oxygen in her blood now
choices.label: A B
para: Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.
para_anno.effect_prop: less oxygen in the blood
para_anno.effect_dir_str: less
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: smoking
question_anno.more_effect_dir: more
question_anno.less_effect_dir: less
question_anno.less_cause_prop: smoking
question_anno.more_effect_prop: oxygen in her blood
question_anno.less_effect_prop: oxygen in her blood
question_anno.less_cause_dir: oxygen in her blood