1.1: Exploring human populations Flashcards
How many times of Canada’s population was added in 2018?
2.3 times (75 million)
What is the expected population in 2040?
9.4 billion
How much was the population before 5000 BCE
1 to 5 million
How were human organized before 5000 BCE
Small nomadic hunter gatherer groups of around 50.
What happened in the 5000 BCE?
- agriculture emerged
- increased cultivation of land, irrigation and the use of specialized labor force
- domestication of animals
- surplus food increased birth rates and reduced mortality
How many was the population in year 1?
200 million
How many was the poplulation in 1804
1 billion
How many did the population increase during 1805-2010?
5.8 billion
How many is projected every 10 years from 2011 -2100?
1-2 billion people
List the type of resources
- Fresh water
- Wood
- Food
- Non-renewable Energy
- Renewable Energy
- Matals and Minerals
- Land
What does the Human Carrying Capacity means?
the population size for a given species that a specific environment can sustain indefinity given the food, habitat, water and other necessary resources available
What is the ecological footprint?
is a measure of a person’s daily demands on the earth’s ecosystems. its the amount of biologically productive area of the earth (both land and sea) needed to produce the resources a person consumes in addition to the area needed to absorb and treat the resulting waste. measured global hectares (gha)
What is a Gha?
represents the biological productivity found on one average hectare (a measure of area of the biologically productive parts of the earth
Describe the demographic transition model
stability —> high growth —> stability —> decline
What happened in the Industrial Revolution in Europe and North America
- faster and cheaper food as a result of new machines and factories
- people migrated from farms in cities
- higher standard of living and lower mortality rates for many people
Describe the Green Revolution
- new varieties of wheat and rice
- growing these new crops in combination with synthetic fertilizers, mechanized irrigation lead to higher food supplies
A reduction family size was seen due to:
widespread education
the social advancement of women
urbanization
economic opportunity
low risk of infant mortality
Signs of slower growth is because:
social and economic development
lower risk of infant mortality
continuing urbanization
factors influencing birth and mortality rates:
social and economic development
advances in medicine and agricultures
shifts in cultural attitudes
factors influencing birth and mortality rates:
social and economic development
advances in medicine and agricultures
shifts in cultural attitudes
What are the three environmental consequences of human population growth
- Pollution
- Climate Change
- Over consumption and habitat loss
