resource reliance Flashcards
1
Q
what does machinery have an impact? (farms)
A
- reduced biodiversity - only grow 1 crop, no hedgerows
- soil erosion - land exposed to elements
- soil nutrients - over farming, washed away by water
- herbicides and pesticides - pollute the soil and water - enter food chains
2
Q
overfishing and its consequences
A
- ruined eco systems
- trawling big nets more fish
- radar technology
- take out big fish - more medium fish less small fish and leave just bacteria in the water
3
Q
fossil fuels made from?
A
- decomposing plants and animals
4
Q
why has the demand for electricity increased?
A
higher population
5
Q
why has the overall demand for energy decreased?
A
decline of heavy industry
6
Q
Fracking?
A
- tap into trapped gas in the ground but causes environmental risks
7
Q
what is food security?
A
- people have enough nutrients and food to stay healthy
8
Q
physical factors affecting food secuirty?
A
- temperature
- soil
- water supply
- pests, disease and paracites
9
Q
human factors affecting food security?
A
-distribution and infrastructure
- poverty
- war and conflict
- land ownership
- waste
- climate change
10
Q
measuring food security
A
wealth and health indicators
- GNI
- % of ppl living on less than $1
- % of household income spent on food
- life expectancy
- child mortality (under 5)
- average calorie consumption
11
Q
Global hunger index
A
- value 0 - 100
100 being most hungry - calculated using % of undernourished people
- child stunting
- child mortality
- child wasting
12
Q
Malthus vision for the future
A
- population increases faster than food supply until we reach crisis point
- then people die
positive checks -disease
preventative checks - marriage later
13
Q
Boserups theory for the furture
A
- population and food production go up, if population gets closer to overtaking the food production we create new technology so we dont reach point of crisis
