During which step of water purification does water moves through sand beds and activated charcoal?
A) Storage
B) Filtration
C) Chlorination
D) Sedimentation
E) Aeration and settling
B) Filtration
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Humans with mutations in the gene encoding AQP1 (aquaporin-1) that cause the absence of AQP1are
characterized by an inability to ____.
a. concentrate urine despite prolonged thirsting d. control sweating b. control edema e. salivate c. make large volumes of dilute urine
Which of the following hormones is involved most directly in carbohydrate absorption?
1.gastrin
2.secretin
3.cholecystokinin
4.glucose insulinotropic peptide
Which of the following pathogen agents is multicellular?
A) viruses B) prions C) protozoans D) helminths E) bacteria
What type of flower should you plant in your garden if you are particularly interested in attracting butterflies?
A. Purple, tubular-shaped flowers with a light floral scent. B. Pendulous red flowers that are open day and night with no scent. C. White day-blooming flowers with abundant pollen and a strong floral scent. D. Yellow flowers with abundant pollen and nectar and a strong floral scent. E. White, night-blooming flowers with a strong floral scent.