7 The season is winter, as you see, the trees now stand as if they were dead: for where are the leaves of the fig-tree? Where are the clusters of the vine? These in winter time are dead, but green in spring; and when the season has come, there is restored to them a quickening as it were from a state of death. For God, knowing your unbelief, works a resurrection year by year in these visible things; that, beholding what happens to things inanimate, you may believe concerning things animate and rational. Further, flies and bees are often drowned in water, yet after a while revive; and species of dormice, after remaining motionless during the winter, are restored in the summer (for to your slight thoughts like examples are offered); and shall He who to irrational and despised creatures grants life supernaturally, not bestow it upon us, for whose sake He made them?
Source: Catechetical Lectures (New Advent)