The document summarizes the four life cycle stages of the monarch butterfly: 1) Eggs are laid on milkweed leaves and hatch into caterpillars after 4 days. 2) Caterpillars eat milkweed leaves for 2 weeks, growing and molting their skin multiple times. 3) Caterpillars then form a chrysalis and undergo metamorphosis for 2 weeks to emerge as adult butterflies. 4) Adult butterflies emerge, their wings dry and harden, and they fly to feed on flower nectar and begin the cycle again.