Topic+2+-+Biotic+and+Abiotic+Influences+on+Terrestrial+and+Aquatic+Ecosystems Introduction questions: What part of this picture is aquatic and what parts are terrestrial? What are some of the biotic components of this lake ecosystem? What are some of the abiotic components in this lake ecosystem? How do you think humans impact the terrestrial ecosystem? What are some ways humans can impact the aquatic ecosystem?