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What kind of pollutant might you find in water bottles and plastic bottles?

What is this structure called? What is the purpose of this structure?   

The time is takes to use up 80% of the mineral in a reserve is called the __________________ time.

What is the number one cause of species extinction?

In 1987, 36 countries developed the Montreal Protocol to reduce emissions of – 

Deforestation in tropical rainforests is mainly for – 

Unsustainable agriculture in the U.S. was responsible for the Dust Bowl in the 1930s.

What are two things you can do personally to reduce water pollution?

Provide one example of ecotourism.

Only _______ of the planet’s enormous water supply is readily available to people as liquid freshwater.