Resource Reliance Flashcards
Why has the world’s population risen so rapidly since 1900?
Better healthcare and medication - vaccinations etc
Better nutrition = better immune system
What is a finite resource?
It is a resource that there is a limited number of
What is meant by the term peak oil?
It is when the most oil is being produced globally
What are the differences between commercial and subsistence farming
Commercial farming is on a much bigger scale
Subsistence farming use older techniques with less technology helping them
Commercial farming grow crops to sell for profit but subsistence farming grows food to feed families and animals.
What is the impact on soil from mechanised farming
Soil erosion is increased as more land is exposed to the wind and rain, especially after harvesting
Nutrients are also lost through overfarming
What is the impact on the air from mechanised farming
Gets polluted by gas emissions from machinery and dust
What is the impact on water from mechanised farming
Water is polluted with fertilisers and pesticides which can damage wildlife in rivers or anywhere the polluted water gets. It can also damage the animals living near rivers.
What is the impact on plants from mechanised farming
Many plants get cut down to make room for this, so this means that it damages the ecosystem by there being less varieties of plants.
What is the impact on insects from mechanised farming
They get killed by pesticides and also lose their habitat which means that there are less of them and less varieties of them.
What is the impact on animals from mechanised farming
Forced to move or die because of loss of their habitat
What happens at a fish farm
Convert low value small fish to high value big fish
5kg of small fish creates 1 kg fish for sale
Waste falls to the seabed
Some escape
Disease
What happens when ecosystems are changed by obtaining energy supplies
Water pollution
Soil contamination
Air pollution
What does food security mean
If the food is Safe, Nutritious, Affordable
What human factors affect food security
poverty Distribution and infrastructure war and conflict land ownership waste climate change
What physical factors affect food security
temperature
soil
water supply
pests, diseases, parasites
What are some good measures for food security
Average daily calorie consumption
Mortality rate of children under 5
where is water stored on earth
The ocean, ground water, ice sheets, surface water, rivers and lakes etc
How do we use our water
70% Agriculture, 22% Industry and 8% Domestic
What are the impacts on river ecosystems of building large dams?
Land is flooded causing habitats to be lost
Water temperature increase
Oxygen starved water is produced by the dam causing fish to die.
Traps sediment reducing water quality
Changes to fish migration routes
What was Malthus’s theory
Malthus argued that population growth will always increase at a faster rate than food supply. This would eventually lead to famine and starvation. This would lead to a crisis resulting in positive and preventative checks on population growth.
What is the definition of ‘positive check’
Some event that causes an increase in death rates and a decrease in the total population. For example famine or disease.
What is the definition of ‘preventative check’.
These are things people can do to reduce population growth and prevent crisis. For example delaying marriages
What was Boserup’s theory
That when population growth begins to approach the limits of food production, this creates an incentive for people to invent new technology and better farming techniques.
What was Goat Aid in Tanzania
Between 1999 and 2006
They imported Toggenburg goats at a cost of £400 each.
Villagers can buy them
Before the goats arrived the villagers were trained on how to care for them
Toggenburg goats were selected because they produce 3 litres of milk a day
On a micro credit
bottom-up aid
