ENV S 100 Midterm: ENV S 100 REVIEW 2

• School: SDSU
• Department: Environmental Sciences
• Course: ENV S 100
• Professor: Biggs, Rahn

Document Summary

Keywords: biome: large, relatively distinct terrestrial region with similar climate, soil, plants, and animals regardless of where it is in the world. Permafrost: permanently frozen ground that varies in thickness and in depth, prevents roots growth stopping woody areas. Melting causes large source of co2 in atmosphere. Positive feedback mechanism: example of conifer trees replacing tundra vegetation, causing additional warming. (see diagram) Pine beetle: moved due to climate change and impacting ecosystems on the way. (see diagram) build-up hypothesis: theory that letting savannas go without manmade fires can make the nature caused ones worse. Estuary: a coastal body of water, partly surrounded by land, with access to the open ocean and a large supply of fresh water from a river. Coral reefs: built from accumulating levels of calcium carbonate (caco3) are usually found in warm shallow sea water where light penetrates.