A huge mass of ice that moves slowly over land is ______________ .
El Yunque National Forest in Puerto Rico is one of the most ecologically diverse forests in the US. Ecologically diverse means ________________ .
To regard with respect or warm approval is ____________ .
To maintain (something) in its original or existing state means ____________.
Salar de Uyuni is the largest expanse of salt-crusted earth. The word “expanse” means ___________ .
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