Chapter 1 Book notes

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Department
Environmental Science
Course
EESA11H3
Professor
prof.d
Semester
Winter

Description
Understanding Pollution : Chapter 1 Human are massively changing the earth Human impacts: of earths land has been transformed Increase in greenhouse Less freshwater Nitrogen fixation Introduction of new species. Extinction of bird species Exploitation of fisheries natures way of protecting What are natures services? Type Examples Provisioning Food (plants and animals), water, fuel (such as wood and dung) Regulating Climate (including temperature and precipitation), water puri_cation and waste treatment, pollination, preventing soil erosion (as with grasses and trees), storm protection (as with mangroves and coral reefs) Supporting Services necessary to produce other ecosystem services including soil formation, nutrient cycling, production of oxygen (from photosynthesis) Cultural Spiritual values, Preventing floods China-> yangatze river had a flood because of deforestation so they banned clear cutting. Global climate change Climate change is caused by increase in CO2. Urban trees: 20 U.S.A-> cities had 30% decline in tree cover over 3 decades. www.notesolution.com
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