https://padlet.com/constantinezoe/773j9f38manu07tv Oxford Chapter 2.3, 2.3, 2.4 en-us 2022-02-09 03:22:11 UTC 2022-02-15 06:37:51 UTC hello@padlet.com https://padlet.net/icons/png/1f331.png constantinezoe https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039529959 Land Degradation=the loss of productivity, quality and decline in fertility of ecosystems as a result of human activities and severe weather

]]> 2022-02-10 05:39:45 UTC https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039529959 constantinezoe https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039555492 Soil Degradation
=the loss of fertility throughout the soil

• caused by:
  • chemical change within the soil
  • compacted by large machinery and animals
  • acid levels increased due to fertiliser build up

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Soil Erosion:
=when soil is gradually worn away by nature

• human actives (particularly clearing trees) accelerates erosion in many places
• cleared land=vulnerable to wind erosion, gully erosion & sheet erosion

]]> 2022-02-10 06:03:41 UTC https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039555768 constantinezoe https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039556342 Ecosystem Decline:
=natural ecosystems becoming degraded

• loss of vegetation
• invasion of alien plants/animals
• decline in stream/river quality
• WITH decline in soil quality & degradation=DESERTIFICATION

]]> 2022-02-10 06:04:19 UTC https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2039556342 constantinezoe https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2045297746 Atmosphere=layer of gases that surrounds the Earth

• Pollutants such as carbon, nitrogen + sulphur=released from factories 
• Change in atmosphere composition + rainforest reduction is responsible for increased temperatures (globally) + changes in our climate
• Global warming=Health risks
• Ozone layer: layer of the atmosphere that protects us from the sun's UV radiation

]]> 2022-02-14 02:59:20 UTC https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2045297746 constantinezoe https://padlet.com/constantinezoe/773j9f38manu07tv/wish/2045323298 =the world's worst environmental risk

• Results in:
  • Increases rates of asthma, lung + heart disease
  • 3.5 mil people die each year from outdoor air pollution 
    • Outdoor: breathing in air with high concentrations of fine particles from: traffic factory + power plant emissions + fires
  • 4.3 mil people die from indoor air pollution
    • Indoor: fuels, such as coal + dried animal waste (after its burnt)
• Tougher laws + restrictions=outdoor air quality improving IN SOME COUNTRIES
• Asia + Africa=air pollution increasing due to rapid growth + expansion in cities→demand for cheap + reliable source of energy
  • Typically fossil fuels such as coal
  • 98% of the developing world have rates of air pollution that exceeds safe guidelines

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Inland waters (rivers and lakes)=world's most degraded environments

Human activities reduced quality + quantity of clean, fresh water

Extracting water (for homes, farming, factories) have affected the health of water supplies

Pollution from farms=damage

Large amounts of freshwater is extracted from natural resources

Highest demand for fresh water=irrigating farms

• Australia=70% of the water extracted from river + aquifers→used for farming

↑ in population + the demand for food + water=many of the world's water sources being degraded

• To much being extracted=shrinking lakes + increased salinity    

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