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UNIT 10. Human impact in Ecosystems
VOCABULARY

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•
•
•
•
•
•
•
•
•
•
•
•
•
•

Overexplotaition
Land occupation
Flood
Draught
Raising
Trapping
Crop
Pest
Hunge...
In nature all things are recycled
Recycling….

Water cycle

Energy cycle

Biomass cycle
Humans change everything badly
How?
Overexploitation

Land
occupation

Pollution

What
have we
done?
Human impact on the environment
Research: Human impact on the environment

Discuss you
understand
these terms
Climate change
http://www.epa.gov/climatechange/kids/basics/index.html
Effects of Climate Change
Effects of Climate Change
Effects of Climate Change

http://www.epa.gov/climatechange/kids/
Desertification,
drought and
flood
•

Desertification is a complex
process involving multiple natural
and human-related causes. In
desertification, the produ...
Loss of
Biodiversity
Biodiversity is the degree

of variation of life forms
within a given species,
ecosystem, biome, or an
entire planet. Biod...
http://www.novamind.com/connect/nm_documents/285
http://www.novamind.com/connect/nm_documents/285
If anything in your dustbin
can be reused by
somebody else, recycled
or repaired it should not
be there!
Waste is Costly
The earth is a closed system. Matter
amoung keeps constance. There are
no losses.
• Any nutrients and reso...
Examples….
To produce one ton of paper, 100 tons of
water are used.
For every litre of beer, 10 litres of water
have been ...
Recycling…
Benefits of recycling
• reduces the amount of waste going into landfill sites,
saving airspace;
• creates jobs and money f...
Benefits of recycling
• slows down the use of the world’s non-renewable
(oil, coal and iron) and renewable resources
(tree...
1) Why can we say Nature is continuously recycling?
2) Which are the main points to be considered in human
impact on the e...
Unit 12. human impact in ecosystems
Unit 12. human impact in ecosystems
Unit 12. human impact in ecosystems
Unit 12. human impact in ecosystems
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Transcript of "Unit 12. human impact in ecosystems"

  1. 1. UNIT 10. Human impact in Ecosystems
  2. 2. VOCABULARY • • • • • • • • • • • • • • • Overexplotaition Land occupation Flood Draught Raising Trapping Crop Pest Hunger Need Loss Greenhouse efect Landfill Buried Burnt
  3. 3. In nature all things are recycled
  4. 4. Recycling…. Water cycle Energy cycle Biomass cycle
  5. 5. Humans change everything badly
  6. 6. How?
  7. 7. Overexploitation Land occupation Pollution What have we done? Human impact on the environment
  8. 8. Research: Human impact on the environment Discuss you understand these terms
  9. 9. Climate change
  10. 10. http://www.epa.gov/climatechange/kids/basics/index.html
  11. 11. Effects of Climate Change
  12. 12. Effects of Climate Change
  13. 13. Effects of Climate Change http://www.epa.gov/climatechange/kids/
  14. 14. Desertification, drought and flood
  15. 15. • Desertification is a complex process involving multiple natural and human-related causes. In desertification, the productive potential of arid and semi-arid lands falls by 10% or more, and topsoil is lost or degraded. – Desertification results mainly from a combination of natural climate changes causing prolonged drought and unsustainable human activities, including overgrazing and deforestation. Overgrazing on marginal lands (top) can extend desert zones (lower)
  16. 16. Loss of Biodiversity
  17. 17. Biodiversity is the degree of variation of life forms within a given species, ecosystem, biome, or an entire planet. Biodiversity is a measure of the health of ecosystems. Biodiversity is in part a function of climate.
  18. 18. http://www.novamind.com/connect/nm_documents/285
  19. 19. http://www.novamind.com/connect/nm_documents/285
  20. 20. If anything in your dustbin can be reused by somebody else, recycled or repaired it should not be there!
  21. 21. Waste is Costly The earth is a closed system. Matter amoung keeps constance. There are no losses. • Any nutrients and resources being taken out of the system (and buried in a landfill, or burnt) are resources lost to us. •
  22. 22. Examples…. To produce one ton of paper, 100 tons of water are used. For every litre of beer, 10 litres of water have been used in the fermenting process. Producing one cellphone requires 75 kg of resources. A toothbrush requires 1,5 kg of resources – coal, oil and water – for its production
  23. 23. Recycling…
  24. 24. Benefits of recycling • reduces the amount of waste going into landfill sites, saving airspace; • creates jobs and money for schools and organisations • reduces pollution and litter; • saves raw materials needed to make new products • reduces the need to import expensive raw materials
  25. 25. Benefits of recycling • slows down the use of the world’s non-renewable (oil, coal and iron) and renewable resources (trees) • reduces energy costs in manufacturing of containers, packaging, etc. • saves water (used in packaging and product manufacture). Recycling paper uses 50% less water than paper that is made from wood pulp.
  26. 26. 1) Why can we say Nature is continuously recycling? 2) Which are the main points to be considered in human impact on the environment? 3) Write five actions to make a contribution to solve global warming 4) Describe in your owm words, the human contribution to the desertification 5) Give three reason to practise the recycling that you can do in your diary life
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