Process:  - The butterfly starts as an egg - The egg hatches to form a larva, also called a caterpillar - The carterpillar molts (loses its skin) many times as it grows - The caterpillar then forms itself into a pupa, or chrysalis - The caterpillar in the chrysalis begins change, a process called mmetaphorphosis - The caterpillar completes its metamorphosis and has turned into a butterfly - The adult butterfly emerges out of the chrysalis and flys away! -   Perturbation hypothesis: suppose more pollution in the environment happens, how will it affect more caterpillars around.  Does the supposed perturbation have an effect (direct or indirect) on the process?

yes