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Mark the correct sentence regarding nitrogen in wastewater:

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On-site wastewater treatment challenges include:

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Suspended solids with diameter sizes greater than 75 microns are usually removed by:

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Biodegradation of organic matter in light greywater will usually follow:

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A homeowner has asked you to design a wetland to treat her family’s greywater for garden irrigation. Which of the below would be your choice of wetland for her relatively small (500m2 lot) desert household?

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Is the following sentence true or false, and why? As long as there is some level of methane (CH4) in the biogas, regardless of concentration, it can be used as an energy source.

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The use of an integrated water management program is:

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Mark the most correct answer to complete the sentence: The vadose zone is ________.

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The water we use usually comes from either surface water or aquifers and not from the vadose zone. Why then it is so important to learn about the vadose zone? Mark the most correct answer.

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Water’s unique characteristics are attributed to:

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