Lecture 3 planetary boundaries and sustainability Flashcards
How do temperature increases as part of global warming results
The greenhouse gases trap heat and that results in an increase in temperature.
How did industrial revolution affect our Carbon dioxide levels
It increased them.
What is the relationship between carbon dioxide levels and temperatures
Increased levels of carbon dioxide will lead to climate change of increased temperatures
How does increased temperatures lead to a rise in sea levels
Arctic ice will melt and add on ocean water.
Mention 5 factors that have increased with an increase in population
-Water use
-Paper usage
-car users
-domesticated land (used for agricultural purposes)
-nitrogen from fertilisers
-more methane emitted by cattle
-CO2 levels
-surface temperatures
-ozone (O3) depletion
-a decrease in woodlands
-severe weather events
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In what 2 ways does ozone depletion affect us
- Sunburn and exposing us to skin related disorders(skin cancer)
- it messes up with our technology
Define Atmospheric aerosol loading
Green house gas emissions.
What is meant by ocean acidification?
As atmosphere air enters the ocean it acidifies it and disturbs the ecosystems(e.g coral reefs) in the ocean
We are exceeding our global freshwater usage? True or false
True and it will affect us economically.
What other consequential things are we doing as humanity
- Chemical pollution as we produce more products, they will affect our soil and water
- land system change
- rate of biodiversity loss
What are the two core boundaries that when exceeded will drive the Earth into a new state.
Climate change and biosphere integrity.
What do you understand by biosphere integrity
. This reflects the effect humans have on the functioning of ecosystems as well as their genetic diversity.
Briefly discuss how the earth will be affected if we exceed core boundaries
It will be less hospitable, damage the efforts to fight poverty and human well-being in both developed and undeveloped countries.
What is meant by anthropocene
The most recent period in Earth’s history when human activity started to have a significant impact on the planet’s climate and ecosystems
Mention the 7(of 17)
social sustainable development goals
No poverty Zero hunger Good health+ well-being Quality education Gender equality Clean water and sanitation Affordable and clean energy
