Unit 3 AOS 1 Climate Change Flashcards
What is the primary cause of the enhanced greenhouse gas effect?
Burning fossil fuels
What are the three main types of fossil fuels?
- Coal
- Oil
- Natural gas
What gas is primarily released by burning fossil fuels?
CO2
What percentage of all energy comes from burning fossil fuels?
85%
What is deforestation’s impact on the global carbon cycle?
Depletion of carbon sinks and emissions from the deforestation process
Deforestation contributes significantly to climate change by releasing stored carbon into the atmosphere.
List three reasons forests are cut down.
- Resources (timber, paper, furniture, homes)
- Palm oil production
- Create space for farmland, grazing pastures, residential estates, or mining
These activities contribute to significant ecological and environmental changes.
How many acres of forest are estimated to be lost each year according to the UN Food and Agricultural Organisation (FAO)?
18 million acres
This loss represents a significant reduction in carbon sinks.
What percentage of greenhouse gas emissions comes from deforestation according to WWF?
15%
Deforestation is the second largest anthropogenic source of carbon dioxide.
What is the range of deforestation’s contribution to carbon dioxide emissions?
6% to 17%
This range highlights the variability in estimates and the importance of accurate monitoring.
How much carbon is reported to be released into the atmosphere per year due to deforestation?
Nearly 1 billion tons
This statistic underscores the magnitude of deforestation’s impact on climate change.
What is a common method of deforestation?
Burning trees
This method not only clears land but also releases significant amounts of carbon dioxide.
What greenhouse gas is primarily produced by cows during digestion?
Methane
Methane is a significant contributor to the greenhouse gas effect.
How does increased use of fertilizers affect greenhouse gas emissions?
Increases nitrous oxide emissions
Nitrous oxide is another potent greenhouse gas.
What percentage of deforestation is attributed to subsistence farming?
48%
Subsistence farming is a farming system where farmers grow food primarily for their consumption.
What percentage of deforestation is attributed to commercial agriculture?
32%
Commercial agriculture focuses on producing crops for sale and profit.
What percentage of all energy-related GHG emissions is transportation responsible for according to UNEP?
25%
This statistic highlights the significant impact of transportation on global greenhouse gas emissions.
As of 2024, what percentage of GHG emissions is transportation responsible for in the United States according to the EPA?
29%
This makes transportation the largest contributing sector to GHG emissions in the US.
By how much did CO2 emissions from the transport sector grow in 2022 according to the International Energy Agency?
250 Mt CO2
This growth contributed to a total of 8 Gt CO2 from the transport sector.
What was the percentage increase in CO2 emissions from the transport sector from 2021 to 2022?
3%
This indicates a slight upward trend in emissions despite the pandemic’s impact.
Which mode of transportation was identified as the greatest contributor to CO2 emissions in 2022?
Aviation
However, aviation emissions were still only at 70% of pre-pandemic rates.
What is the basis of capitalism that contributes to climate change?
A perpetual economic growth model requires exploitation of resources
This model necessitates the exploitation of resources.
What energy sources have fueled economic growth in capitalism?
Cheap energy sources such as coal, oil, and gas
These sources have been pivotal in sustaining economic expansion.
According to the IPCC report, what do some scientists believe about climate change?
It is caused by industrial development, particularly by capitalist society’s social and economic development
This perspective views capitalism as ultimately unsustainable.
What does the IPCC state about greenhouse gas emissions?
They must peak in the next 4 years
This is a critical timeline for addressing climate change.