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Renewable energy resources - Coggle Diagram
Renewable energy resources
Hydroelectric Power (HEP)
Energy harnessed from the movement
of water through rivers, lakes and dams
Advantages
creates water reserves as well as energy supplies
potentially a good option for countries with high rainfall
pumped storage can supply energy at peak times and then return water to storage using surplus energy when demand is low
Disadvantages
costly to build
can cause the flooding of surrounding communities and landscapes
dams have major ecological impacts on local hydrology
build up of plant and other
material reduces storage over time
Biomass
Biomass energy is generated from
decaying plant or animal waste. It can also be an organic material which is burned to provide energy, eg heat, or electricity
Advantages
a cheap and readily available source of energy
provides constant, reliable energy
if the crops are replaced, biomass
can be a longterm, sustainable energy source
Disadvantages
when burned, it gives off atmospheric pollutants
contributes to build-up of greenhouse gases
if crops are not replanted, biomass is a non-renewable resource
Wood
Advantages
a cheap and readily available source of energy
if the trees are replaced, wood burning can be a longterm, sustainable energy source
Disadvantages
when burned, it gives off atmospheric pollutants
contributes to build-up of greenhouse gases
if trees are not replanted, wood is a non-renewable resource