Match each aspect of desalination to the correct category.
benefit|challenge|process
Classify each statement based on whether it would make desalination practical for a city.
A city is deciding whether to invest in a desalination plant or expand its groundwater pumping system. Which factor should most influence the city’s decision?
Choose the correct answer from each drop-down menu to complete the statements. In a groundwater system, an aquifer is a layer of rock or sediment that is [Dropdown 1] , meaning it allows water to move through it. An aquitard is a layer with [Dropdown 2] than the aquifer. The water table is a [Dropdown 3] that marks the top of the saturated zone underground.
permeable|less permeability|boundary
Match each groundwater system feature to its correct function or description.
layer that restricts water movement|permeable rock layer that stores groundwater|top of the saturated groundwater zone|opening where pressure causes water to rise naturally
Order the freshwater sources from greatest to smallest in terms of how much of Earth's total freshwater they hold.
What is the best explanation for why most freshwater on Earth is not directly available for human use?
Indicate whether each water source is readily usable for human needs with minimal treatment or infrastructure, or if it requires significant technological effort or environmental modification to access or use.
Match each water source to the approximate proportion of Earth’s total water or freshwater it represents.
97 point 5 percent of total water|2 point 5 percent of total water|largest share of freshwater|smallest share of freshwater
Match each water source to the approximate proportion of Earth’s total water or freshwater it represents.
97 point 5 percent of total water|smallest share of freshwater|2 point 5 percent of total water|largest share of freshwater
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