https://padlet.com/elliottjos/35kuiogih86f95z4 Based on Oxford Chapter 2.2,2.3,2.4 en-us 2022-02-09 03:22:55 UTC 2022-02-14 12:33:36 UTC hello@padlet.com https://padlet.net/icons/png/1f331.png elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039552984 * The loss of productivity, quality and decline in fertility of ecosystems as a result of human activities and severe weather ]]> 2022-02-10 06:00:48 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039552984 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039555972 <sub>* The loss of fertility of the soil 
* Can be because of:
          - a chemical change 
          - compacted by large machinery 
          - trampled by hard hooved animals
          - a build-up of fertilizer = becomes acidic
          - intense farming = loss of soil nutrients
* Problem in Australia as the build-up of salt in the soil called salinity</sub> 

]]> 2022-02-10 06:03:55 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039555972 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039556715 <sub>* soil is gradually worn away by natural factors in an ecosystem 
         - such as rivers, waves, wind 
* Human activities can accelerate this erosion
          - such as logging & excessive farming
* Cleared land is more vulnerable to
           - wind erosion 
           - gully erosion 
           - sheet erosion</sub> ]]> 2022-02-10 06:04:43 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039556715 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039557253 <sub>* Process of natural ecosystems becoming degraded and their health decreasing 
* This may be through 
           - loss of vegetation 
           - invasion of alien plant 
           - animal pests 
           - decline in the quality of rivers & streams 
* Ecosystem decline + bad soil quality = degration that can lead to desertifcation</sub>

]]> 2022-02-10 06:05:15 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2039557253 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046016670 * Pollutants such as carbon, nitrogen & sulphur are released into the atmosphere from factories

* This change in the atmosphere + reduction in rainforest cover = increase in global climate temperatures]]> 2022-02-14 11:44:05 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046016670 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046034859 <sub>* considered to be the world's worst environmental risk today

* Air pollution can = 
                - increased rates of asthma 
                - lung disease 
                - heart disease

* 3.5 million people die from air pollution (outdoor) each year 

* Tougher laws & restrictions regarding emissions have been implemented across the world to help combat this problem

* It is extreme in Asia and Africa mainly due to the rapid growth and expansion of cities</sub>]]> 2022-02-14 11:57:59 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046034859 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046051967 * Human activities have reduced the quality & quantity of clean fresh water in places like rivers, lakes & wetlands

* Extracting water and damming have also caused damage
    
* Over extraction has lead to shriking lakes and increased water salinity 


]]> 2022-02-14 12:10:34 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046051967 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046069640 <sub>* Damming rivers allow for water supply, flood control and hydroelectricity, however, it can also be negative

* Pollution from farms and industry sources entering these waters has also caused damage 

* Dams disrupt the flow of water, flooding some areas and preventing water from reaching other areas

* It also affects the natural processes in an ecosystem such as the provision of fertile soil, food production and fresh water.</sub>

]]> 2022-02-14 12:23:06 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046069640 elliottjos https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046074408 <sub>* water pollution is the contamination of our rivers, lakes, wetlands, estuaries, seas and oceans.

* Can be the result of human activities either:
- near the water (e.g shipping, fishing and oil drilling) 
- further away (e.g the use of chemicals in farming, litering, clearning land , crwating landill and processing sewage

* In extreme cases = large food shortages</sub> ]]> 2022-02-14 12:26:31 UTC https://padlet.com/elliottjos/35kuiogih86f95z4/wish/2046074408