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Revision uses - Coggle Diagram
Revision uses
Water shortage causes
Demand factors
Increasing demand for water for crops and irrigation led to a decreasing supply of water
Population growth will cause greater strain on the water resources as they are already facing water stress
Supply factors
Seasonal rainfall- some countries like India experience high annual rainfall.
some countries like India experience high annual rainfall
but rainfall is unevenly distributed. As such, there might be water stress especially during the dry season
Water
Singapore's four national taps
local catchment area
Advantage: Singapore has high rainfall
Disadvantage: There might be a sudden draught
NEWater
Advantage: Reuse waste water, reducing wastage
Disadvantage: Recycled water may not be accepted by most Singaporeans
Imported water from Malaysia
Disadvantage: Water agreement will expire
advantage: Cheap
Desalinated water
Advantage: Seawater are unlimited
Disadvantage: desalination plants are too costly
Rainforest
Plants
Structure
Undergrowth layer: 20m.
Dark because much of the rays are blocked by the canopy above
Canopy layer: 30m
Thick, woody vines
Emergent layer: 50m
Tall rainforest emergent layer trees
Adaptation
Leaves developed drip tips to allow water to run off, preventing growth of fungus
Buttress roots to support heavy weight of trunk
Colourful and fragrant flowers to attract insects and other animals for dispersal and pollination
Deforestation
Deforestation is the cutting down and removal of all or most of the trees in a forested area.
Cattle ranching
Agricultural activities
Reforestation