The caterpillars of the winter moth moth feed on the young oak leaves and complete their development before the oak leaves become tough and unusable. Explain how the size of the butterfly population will change if the hatching of the caterpillars coincides with the opening of buds and the growth of young leaves or occurs at other times.
1) when coincident with budding, the butterfly population can reach large sizes due to the abundance of food;
2) if the hatching of caterpillars occurs after the foliage has opened, the number will decrease, since the caterpillars of butterflies will not be able to feed on old leaves;
3) if the hatching of caterpillars occurs before the foliage bloom, the number will decrease, since the caterpillars will die of hunger.
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