Human systems Flashcards
1
Q
What is the crude birth rate?
A
how many babies are born each year for every thousand people in the population
2
Q
What is the formula for the crude birth rate?
A
CBR = number of births/total population × 1000
3
Q
What is the total fertility rate?
A
the number of children a woman is expected to have in her lifetime.
4
Q
What factors affect fertility rates?
A
- Role of children in the labour force or education
- Rates of urban living
- Women’s status
- Life style choices and cultural norms
- The infant mortality rate (IMR) and pensions
- Family planning and abortions
- Government policy
5
Q
What is the crude death rate?
A
that is how many people die each year for every thousand people in the population
6
Q
What factors affect the death rate?
A
- Income
- Education
- Access to food
- Health care
- Water supply and sanitation
- Access to shelter
7
Q
What is the natural increase rate (NIR)?
A
Fertility and mortality combine to determine population size
8
Q
How you caluculate NIR?
A
NIR = (CBR – CDR)/10
9
Q
What is the doubling time formula?
A
DB= #years/NIR
