4. Population Flashcards
How did the 1st Agricultural Revolution (10000 BCE) affect the human population?
- Wide-scale transition of many human cultures from a lifestyle of hunting and gathering to agriculture and settlement.
- This made large populations possible
What were the advantages of the 1st Agricultural Revolution?
- Produce food in greater quantities
- Increase the carrying capacity of the land
What were the disadvantages of the 1st Agricultural Revolution?
- Farming methods can lead to environmental degradation
- Domestication of animals / living in high proximity to animals led to new diseases such as smallpox
How did the Bubonic Plague from 1346-1353 affect the human population?
- The most fatal pandemic in recorded history
- Caused 25 million deaths in Europe alone
How did the 2nd Agricultural Revolution between the mid-17th to mid-19th centuries affect the human population?
Unprecedented increase in agricultural production starting in Britain as a result of increased labour and land productivity, mechanisation and crop rotation.
How did the Industrial Revolution affect the human population?
Industrialisation of western society further increased food production, as well as subsequent developments such as improved sanitation, energy use, medical discoveries and standardised education.
How did the discovery of penicillin in 1928 affect the human population?
In 1928, Alexander Fleming discovered penicillin, leading to the invention of antibiotics, which save millions of lives each year and has extended the extended the average human lifespan by 23 years.
How did WW1 and WW2 affect the human population?
The most fatal conflicts in history, with 20 million deaths in WW1 and between 70-85 million deaths in WW2.
How did the global population increase between 1960 and 1970?
Between 1960 and and 1970, the global population increased by an average 70 million a year - 8000 / hour!
Was population growth between 1960 - 1990 even around the globe?
Nope!
- Population of Mexico increased by 118% between 1960 - 1990, from 38 milion to 83 million people!
- Meanwhile, the population of the UK only increased by 8%, from 53 to 57 million.
How did COVID-19 affect the human population?
15 million deaths from COVID-19 worldwide, however this number is likely an underestimate due to limited testing.
When is the peak human population expected?
The human population is expected to peak at 10.4 billion in 2086, decreasesing afterwards as low fertility rates cause population decline.
How have world fertility rates fallen since 1950?
On average, fertility rates across the world have fallen from ~5 in 1950 to 2.3 in 2021.
What is the replacement rate?
The replacement rate is the fertility rate at which a population exactly replaces itself from one generation to the next.
In HICs, this is a fertility rate of 2.1
How is Europe’s share of the global population expected to decline between 1950 and 2050?
Europe’s share of the global population is currently falling from 22% in 1950 to a projected 7% in 2050