[25 points] Fill in the blanks with the most appropriate answer: a. Runoff is gr

Question

[25 points] Fill in the blanks with the most appropriate answer: a. Runoff is greater in urban areas because there is less to the ground during precipitation events. b. The is the probability of a certain precipitation event occurring over a certain time and duration in any given year Contour lines very close together on a topographic map indicate a c. slope. d. A source of pollution is collected by a network of pipes to a single discharge location. One example is a sewage outfall. BOD bottles are stored in the dark to prevent production of oxygen during the test. An example of a physical pollutant in water sources is An example of a chemical pollutant in water sources is An example of a biological pollutant in water sources is e. and the f. g. h.

Explanation / Answer

(a) infiltration

(b) return period

(c) steep slope (closer the lines, steeper the slope)

(d) point-source

(e) photosynthetic(algae) production

(f) sediment

(g) bleach and discarded medications

(h) bacteria and viruses

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