Food Chains & Population Changes Montessori-Inspired Ecology Material (Ages 6β12) Help students explore how energy flows through ecosystems and how changes affect living things with this hands-on, Montessori-style science material. This resource guides children from building simple food chains to analyzing population changes through cause-and-effect thinking. Whatβs Included: β’ Land biome animal cards (grass, mouse, rabbit, snake, owl, fox) β’ Marine biome organism cards (phytoplankton, zooplankt