question: As Cindy swam closer to the ocean surface, it got lighter and _____.
choices.text: warmer cooler
choices.label: A B
para: Water density increases as salinity and pressure increase, or as temperature decreases.
para_anno.effect_prop: Decreases
para_anno.cause_dir_str: increase
para_anno.effect_dir_str: increases
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: Water density
question_anno.more_effect_dir: cooler
question_anno.less_effect_dir: warmer
question_anno.less_cause_prop: ocean surface