Solids in wastewater treatment are removed in ________
A) tertiary treatment
B) pretreatment
C) secondary treatment
D) sludge digestion
E) primary treatment
Answer: B
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What was an unintended side-effect of the construction of the Aswan High Dam in Egypt in the 1970s?
A) Egypt and its southern neighbor, Sudan, fought a war over control of the area. B) The level of the Mediterranean Sea fell several feet, which hurt several port cities. C) It disrupted international trade in East Africa. D) The Sahara Desert became even drier, due to its impact on the water table. E) It led to the spread of a parasitic disease among the population, schistosomiasis.
Of the chemicals that fall under the TSCA ________% have been tested for toxicity and ________ have been tested for endocrine, nervous, or immune system damage
A) 50; half B) 10; 10% C) 50; one-quarter D) 25; 10% E) 10; almost none
The ________ is the area that underlies the shallow water bordering continents
A) surface zone B) bathymetric zone C) topographic shelf D) continental shelf E) pycnocline
If a 1500-W hair dryer is connected to a 120-V line, what is the maximum current drawn?
What will be an ideal response?