PHIL 2750 Lecture Notes - Lecture 11: Cambrian, Greenhouse Gas, Planetary System

• School: University of Manitoba
• Department: Philosophy
• Course: PHIL 2750
• Professor: Robert J.Leland

Document Summary

Climate: weather trends over a long period of time. Greenhouse effect (in the atmosphere, greenhouse gases includes: water vapour, co2, methane, no) Greenhouse gas absorbs and emit solar radiation. Human beings (exits 2000,000 to 300,000 years ago) Several hundred million years ago, 2000 ppm of greenhouse gas in cambrian period. The increase of greenhouse gas (280 ppm to 406 ppm) from 1750 to present, caused by industrial revolution. Plant photosynthesis: take in co2 (110 gigatons/year) through light and release o2. Human: co2 put in the year (40 gigtons) Economy: 86% - 88% burning fossil fuels release co2. When you heat up the atmosphere in the planet, they need to release the energy through the events: hurricane/typhoons, tornadoes, extreme heat events (drought) Cause/consequences: exacerbation of human health problem; wildfires property loss. Adaptation to these effects increased costs to protect against loss from extreme weather. Water cycle cycle of water movement through planetary system.