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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. 

China has 16 of the world’s 20 most polluted cities. Why?

Thank you for taking my class and thank you for caring!    

The upper zone of the ocean is called the ________________ zone.

A lack of iodine in a person’s diet will cause – 

All of the following are freshwater marine ecosystems EXCEPT –