Biology 102Lecture 27Outline of Last Lecture:I. Clicker QuestionsII. AmphibiansIII. ReptilesIV. EndothermsOutline of Current Lecture:I. Clicker QuestionII. BiosphereIII. EcologyClicker QuestionWhat are the major environmental issues that we face now and in the future?a. Pollutionb. Global warming c. Deforestation/habitat lossd. Lack of clean watere. Depletion of resourcef. Growing human population(all of these are correct)BiosphereBiosphere: all of Earth that is inhabited by life - Extends several kilometers into the atmosphere- Down to depths of oceansEcologyEcology- studyof the interactions of organisms with their enviroments- Acquatic biomes: fresh water and marine- Terrestreial biomes: climates and land Ecologists study how organisms interact with environment at several levels- Organism: Ex. what challenges does this organism face- Population: Ex. what effects the size of the organismBiology 102- Community: not just one species - Ecosystem: land or environment living and nonliving componentso Abiotic: nonliving componentso Biotic: living components o Carrying capacity: the limit of a species that the environment can
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