Population and the Environment Flashcards
what is crude birth rate?
number of births per 1000 per year
what is Total fertility rate?
average number of births per woman
What is crude death rate?
Number of deaths per 1000 per year
what is the equation for population change?
(births +immigration)- (deaths+ emigration)
what is birth and death rate reported as?
Birth and death rate is reported as the number/ 1000
when does zero population growth occur?
zero population growth occurs when births balance deaths
what is population distribution?
population distribution is the pattern of where people live. This can be considered at scales from local, regional to global
How do people effect the environment?
-burning fossil fuels
-creating urban areas
-cutting forest for wood
-flushing waste into rivers
-air pollution from vehicles
-overgrazing
-overcultivation
-overfishing
-microplastics in water system
How does the environment effect people?
-climate
-water availability
-shelter availability
-soil for plant growth
-natural disasters
what is fertility rate?
fertility rate is a measure of the ability of a population to replace itself. It is the number of children born in a population in a year, or the average number of children born to each woman during her lifetime. Rate needs to be 2.1.
What is longevity?
Longevity is the increase in life expectancy that occurs over time. In the UK we have an expected increase of 5 years over a 30 year life span
what is over population?
Over population is when there are too many people living in an area to be supported by the resources available
What is Natural change?
Natural change is the change in the size of a population due to the relationship between birth and death rates
What is infant mortality rate?
Infant mortality rate is the number of deaths of children under the age of one year, expressed per thousand per year
What factors affect mortality?
- doctor : patient access
-lifestyle
-healthcare
-accidents
-level of air pollution in the area you live in
-conflicts
-quality of housing
-demographic- vaccines, age of population
disease in the region