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bio final chapter 47

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Question:

- 5 Causes of extinction

Author: razan 3ci6



Answer:

1. Loss of habitat (deforestation, destruction of coastal reefs) 2. Exotic species, sometimes called invasive species are non-native members of an ecosystem... - Colonization, Europeans took a number of familiar species with them when they colonize new places. - Horticultural and agricultural, U.S taking Kudzu Irvine from Japan that was thought to prevent soil erosion but no covers much of the landscape smothering walnuts Magnolia and sweet gun trees. - Accidental transportation such Zebra mussels 3. Pollution, can be defined as any contaminants introduced into the environment to adversely affects the lives and the health of the living organisms. - Acid deposition, but sulfur dioxide from power plants and nitrogen oxide an automobile exhaust are converted to acid when they are combined with water vapor in the atmosphere. - Eutrophication, when lakes receive excess nutrients due to runoff from agricultural fields and fertilize lawn’s as well as water waste from sewage treatment causing algae bloom - Ozone depletion, the ozone shields most of the wave length of harmful ultraviolet radiation - The synthesis of organic chemicals called nonylphenols which harm the transition of salmon fish from fresh water to salt water 4. Climate change, it refers to the recent changes in the earths climate, resulting in an increase of earths temperature causing severe storms in the melting of glaciers, causing the extinction of animals as well as plans and vegetation. 5. Over exploitation, is the process of taking more individuals from a world population that can be naturally replays resulting in a decrease in the population, the smaller the population the more valuable the members and the greater the incentive to capture the few remaining organisms hunted by poachers.


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