question: A population of squirrels in a local forest had less food available to them this spring than they did last spring. During which spring will more squirrels leave the area to live somewhere else?
choices.text: this spring last spring
choices.label: A B
para: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.
para_anno.effect_prop: emigration
para_anno.cause_dir_str: low
para_anno.cause_dir_sign: LESS
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: food supply
question_anno.less_cause_prop: food
question_anno.more_effect_prop: leave the area