question: Reid notices that tributary glaciers make U-shaped valleys when flowing. A large valley was likely caused by a _____ tributary glacier.
choices.text: small large
choices.label: A B
para: Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.
para_anno.effect_prop: U-shaped valley
para_anno.cause_dir_str: smaller
para_anno.effect_dir_str: shallower
para_anno.cause_dir_sign: LESS
para_anno.effect_dir_sign: LESS
para_anno.cause_prop: tributary glaciers
question_anno.more_effect_dir: large
question_anno.less_cause_prop: tributary glacier
question_anno.more_effect_prop: U-shaped valley