Ecosystem Services
Environmental Policy
Biodiversity
Urban Environments
Animal Species
100

This ecosystem service includes pollination of crops by bees and other insects.

What is pollination?

100

This US law regulates air pollutant emissions.

What is the Clean Air Act?

100

This term describes the number of different species in an area.

What is species richness?

100

Impervious surfaces contribute to marine pollution primarily in this way.

What is runoff pollution?

100

This fish is the official California state marine fish.

What is the Garibaldi?

200

Forests provide this service by storing carbon from the atmosphere.

What is carbon sequestration?


200

This 1973 law protects species at risk of extinction.

What is the Endangered Species Act?

200

Species found in only one region.

What are endemic species?

200

Cities and other urban areas are warmer due to this effect.

What is the urban heat island effect?

200

This species is known for holding hands while resting to avoid drifting apart.

What are sea otters?

300

Decomposition returning nutrients to soil is an example of this ecosystem service.

What is nutrient cycling?

300

The Paris Agreement primarily targets this gas.

What is carbon dioxide (CO₂)?

300

This is the terrestrial biome with the greatest biodiversity.

What are tropical rainforests?

300

Planting street trees helps reduce this respiratory health hazard.

What is air pollution (PM)?

300

This species is the largest terrestrial animal.

What is the African Elephant?

400

Ecosystem services collapsing past a certain threshold reflects this theory.

What are ecological tipping points?

400

This policy sets a cap and allows trading.

What is cap-and-trade?


400

This type of species greatly harms biodiversity by outcompeting native species.

What are invasive species?

400

This term describes a massive urban environment with populations exceeding 10 million inhabitants.

What is a megacity?

400

The world's largest fish, growing up to 40-60 feet long and weighing 20 tons

What is a whale shark?

500

Coral reefs protecting coastlines from wave energy illustrate this type of regulating service.

What is coastal protection?

500

This is the number of UN Sustainability Goals adopted in 2015 as part of the 2030 Agenda.

What are 17 goals?

500

When losing one species triggers significant ecosystem changes, it demonstrates this ecological concept.

What is a trophic cascade?

500
This country was ranked as the most sustainable country in the world in the 2025 Sustainable Development Report.

What is Finland?

500

This flightless bird became extinct after invasive rats and human exploitation.

What is the dodo bird?

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