People and the Environment Flashcards
1
Q
What is distribution?
A
- Pattern of where people live
- Sometimes evenly distributed within an area, sometimes not
- E.g. 94% of China’s population live in the east because the west is mostly covered in deserts and mountains
2
Q
What is denisity?
A
- Population density is calculated by:
- Population of an area / size of that area
- E.g. Bangladesh has 1200 / km2 whereas Libya has 4 people / km2
- Areas of highest population density are in South and East Asia
3
Q
When did population hit 1 billion?
A
1804
4
Q
What was most population growth linked to until 1950?
A
- Linked to developed countries
- This was due to improvements in food production and healthcare, increasing life expectancy and decreasing child mortality
- Growth since 1950 has been dominated by developing countries
5
Q
How much has population grown, using numbers?
A
- Population in Englad/Wales increased from 9.4 million in 1801 to 32.5 million in 1901
- Global population increased from 2.5bn to 7.5bn between 1950 and 2017
- Predicted to reach 9bn by 2050
6
Q
How does climate affect the population?
A
- Some climates favoured over others to live in
- Few live in Arid areas, but many in temperate areas
- Tropical climates usually have a large population densities because it’s easy to produce food
- Climate change is affecting population
- E.g. In coastal areas, where sea levels are rising, people are moving inland
7
Q
How do soils effect population?
A
- Fertility determines the amount of food produced in the region
- E.g. Many cities are built near volcanoes where soil fertility is high
- Soil erosion may cause people to migrate
- E.g. Floodplains in Bangladesh
8
Q
How does resource distribution affect population?
A
- Linked to availability of fresh water and other natural resources
- Lack of water security can result in lack of food security, health issues, disease and even death
