Category A
A resource that keeps us alive, drives the weather, and can be trapped behind massive concrete dams to spin turbines and generate electricity.
Water / Hydroelectric power
The three specific resources named "fossil fuels" because they formed from ancient plants and organisms over millions of years.
Coal, Oil (Petroleum), and Natural Gas
The reddish-brown metal mineral dug from the ground and used in almost all electrical wiring because electricity flows through it easily.
Copper
Meeting our own resource needs today without ruining the chances of future generations to meet theirs.
Sustainability
The specific "R" action Singaporeans take when they choose to use a digital e-ticket instead of printing a physical paper copy.
Reduce
The major weather-related drawback that wind and solar power share, unlike fossil fuels which can be burned anytime.
hey are unreliable / intermittent (depend on sun/wind)
The specific greenhouse gas is released in massive amounts when fossil fuels are burned, trapping heat in the atmosphere.
Carbon Dioxide (CO2)
The lightweight metal mineral in massive global demand because it is the core ingredient in smartphone and electric vehicle batteries.
Lithium
The two-word geographic concept that means a country has a reliable, independent power supply and doesn't rely on imports.
Energy Security
Instead of letting general waste pile up in landfills, Singapore practices the "R" of Recovery by burning trash to generate electricity at these unique facilities.
Waste-to-Energy (Incineration) plants
The exact moment a renewable resource like a forest stops being sustainable.
When humans cut down trees faster than they can naturally grow back (overexploitation)
The solid, black fossil fuel that powered the Industrial Revolution but is the dirtiest and most polluting source we use today.
Coal
The reason Uranium (used for nuclear energy) is strictly classified as a non-renewable resource, despite being a clean-air energy source.
It is a finite mineral dug from the earth that cannot be naturally replaced once used.
A two-word economic concept where products are never thrown away as waste, but instead entirely recycled and rebuilt into new things.
Circular Economy
The specific "R" word that is severely threatened in Singapore because 40% of the items thrown into our public blue bins are ruined by food or liquid waste.
Recycle (Recycling)