Population grew
exponentially doubling at
each stage
Food
production
grew
arithmetically.
Population needs
natural checks to
keep with food
demand
One child
policy- China
Boserup
Food supply meets demand
via new technologies to
produce more food
Green
Revolution-
India
Fixing resource demand
through technology
Hydrogen Cars
No release of harmful emissions
Currently Tfl have 56 buses powered by hydrogen
Separating hydrogen
energy requires energy but
can be provided from a
renewable resource
Clean Coal
Carbon Capture and Storage (CCS)
involves capturing the carbon
dioxide, preventing the greenhouse
gas entering the atmosphere and
storing it deep under ground into for
example disused coal fields.
How to class resources
Non-renewable
Cannot be
replaced, i.e. Coal
and Oil
Renewable
Never run out, can be used
infinately, i.e. wind
Sustainable
Meeting needs now without
preventing future resources, if
managed properly, i.e. wood
Can recycle or install solar panels/ wind turbines
Energy efficient electrical appliances
Case Studies
Renewable
Royd’s Moor Wind
Farm, Penistone
+ Once turbine made,
non polluting
+ Land still can be
used for agriculture
- Strength of wind not
constant
- Large wind farms to to
provide for whole
communities
- People feel it invades natural
scenery
Non- Renewable
Tar
Sands,
Alberta,
Canada
+ Make profits for
major oil
companies
+ Dependence on
Middle East reduced
- 3x more CO2 than
'lighter oils'
- Tar extraction uses vast
quantities of to 6 barrels for
each barrel of oil