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Flashcards in Introduction to population Deck (22):
1

Estimate global population change

canada and usa = little change
africa going to experience biggest change - lack of education and low development
russia = decrease
india = one of the fastest growing populations in world

2

What is the carrying capacity?

maximum population size of the species that the environment can sustain

3

when did world population reach 7.3 billion?

july 2015

4

world Population increase...

gradual increase since 1760's from 1950-2015 rapid growth

5

why did population start to increase?

due to people living longer - ageing population

6

what does the UN predict population will reach by 2100?

11 billion

7

what is population distribution?

the pattern of where people live

8

population density

the number of people living in an area usually per km2

9

where is Niger?

in the sahel region of Africa

10

what is niger?

the poorest country on the planet

11

where was niger ranked?

in 1960 it was ranked 13th and now it is ranked 3rd

12

why might farming affect population growth?

increase in farming leads to more population being needed to work
need more children to work

13

main reasons for growth

large family sizes are a cultural norm
increase in farming - more people needed for work
in poverty - not education etc
highest fertility rate
lack of political stability
high infant mortality

14

how has culture shaped population?

large family sizes = cultural norms

15

problems with over population

uk population grown by over 21 mil
run out of resources
immigration
increase in rent
lack of space
lack of housing
very expensive
no jobs
crowded
strain on transport

16

what are the elements in the physical environment?

climate
soils
water supply
geology and other resource distributions
population parameters
role of developmental processes

17

climate

-arguably most important
-rainfall, temperature and wind velocity all determine food productivity
-climate change arising from GW is the aspect of the environment giving the greatest concern to human population

18

soils

-most important feature of soils is it's fertility
-features of soil determine agricultural output e.g soil structure
-areas with fertile soils are often associated with densely populated areas- due to agricultural output

19

water

-hygiene
-sanitation
-people need water in order to survive
-key use is for irrigation to maintain food production

20

geology and other resource distributions

concentrations of other resources such as fossil fuels or other valued minerals have given rise to industrialisation and consequently densley populated areas in europe

21

what are population parameters?

they are an element of the physical environment which determine density and distribution of population

22

role of developmental processes

-development surges have sparked technological advances which have enabled areas to support a larger human population.
-ability of human race to control many infectious diseases has accounted for population rise
-rapid population growth and process of development have had a largely negative impact on the environment