Climate
Recycling
Water
Biodiversity
Energy
100

What gas do humans emit most by burning fossil fuels?

Carbon Dioxide (CO2)

100

What material are most soda cans made from?

Aluminium (Al)

100

What covers about 71% of Earth's surface?

Water

100

What insect is famous for pollinating flowers?

Bee

100

What renewable energy comes from sunlight?

Solar energy

200

What is the long-term warming of Earth called?

Global Warming

200

What material can be recycled repeatedly without losing its quality?

Glass

200

What process turns water vapor into clouds?

Condensation

200

What word means variety of life?

Biodiversity

200

What renewable energy uses moving air?

Wind energy

300

What layer traps heat around Earth?

Atmosphere

300

What process turns used materials into new products?

Recycling

300

What do we call water stored beneath Earth’s surface?

Groundwater

300

What is the natural home of an organism?

Habitat

300

What device converts sunlight into electricity?

Solar panel

400

What human activity releases the most CO₂ globally?

Fossil fuel burning

400

What waste breaks down naturally?

Biodegradable waste or Organic waste

400

What causes water to move from plants into the atmosphere?

Transpiration

400

What do we call a species found naturally only in one specific area?

Endemic species

400

What energy comes from Earth's internal heat?

Geothermal energy

500

Which gas has a stronger warming effect per molecule than CO₂ but is released in much smaller amounts?

Methane

500

What process uses worms to turn food waste into nutrient-rich soil?

 Vermicomposting 🪱

500

What process happens when excess nutrients cause rapid algae growth in water?

Eutrophication

500

What is the term for a species that is at serious risk of extinction?

Endangered species

500

Which uses more energy: an empty fridge or a full fridge?

Empty Fridge