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100

What is the largest animal on Earth?

Blue whale

100

How long does a plastic bottle take to decompose: 

5 years, 50 years, or 450 years?

450 years

100

What insect pollinates many flowers and crops?

bee


100

What melts when Earth gets warmer: glaciers or volcanoes?

Glaciers

100

What simple habit can reduce the number of disposable plastic bottles a person uses each year?

Using a reusable water bottle

200

What is the fastest-growing plant in the world?

Bamboo

200

What kind of pollution causes loud city noises?

Noise pollution

200

What do we call animals at risk of disappearing forever?

Endangered species

200

Name one renewable energy source.

Solar / wind / hydro / geothermal

200

What household action helps save electricity when devices are not in use?

Unplugging them / turning them off completely

300

What layer of the atmosphere protects Earth from most harmful ultraviolet radiation?

The ozone layer

300

Which country produces the most plastic waste overall?

USA

300

What is the largest rainforest in the world?

Amazon Rainforest

300

What term describes the warming effect caused when gases trap heat in Earth’s atmosphere?

The greenhouse effect

300

What practice turns food scraps and organic waste into nutrient-rich soil?

Composting

400

Which desert is the largest in the world

Antarctica

400

What is the most common item found during beach cleanups worldwide?

Cigarette butts

400

Sea turtles often mistake plastic bags for what food?

Jellyfish

400

What fossil fuel is considered the most polluting when burned for electricity?

Coal

400

What transportation choice reduces carbon emissions when traveling short distances?

Walking / cycling / public transport

500

What is the name of the supercontinent that existed millions of years ago before splitting apart?

Pangea

500

Which country first banned thin plastic bags nationwide in 2002?

Bangladesh

500

What process allows plants to convert sunlight into energy while releasing oxygen?

Photosynthesis

500

What term describes the long-term rise in average global temperatures mainly caused by human activities?

Global warming

500

What concept measures the total amount of greenhouse gases caused directly and indirectly by a person or activity?

Carbon footprint