Become an ecologist for a day! Discover the biotic and abiotic features of ecosystems. Investigate natural changes in ecosystems and how they affect the organisms living there (day/night, seasons, tides, fires, floods, earthquakes, tornadoes, phototropism, hibernation, & migration). Learn how humans change ecosystems; human population growth, pesticides, herbicides, fertilizers, eutrophication, deforestation, fossil fuels/global warming, & water pollution. Investigate how humans can rest