Surface Freshwater — Quiz

Question 1

Assume that the mid-river tributary input increases to 30 the fraction with numerator m cubed and denominator s after heavy rainfall. Which is the best estimate of the mid-river sediment load?

Revolt · Accepted Answer

100 tons per day

Question 2

Why does the sediment load decrease between the lower river and the delta?

Revolt · Accepted Answer

Base level causes deposition near the river mouth.

Question 3

Choose the correct answer from each drop-down menu to complete the statement. If tributary input increases in the mid-river, the main river discharge will [Dropdown 1] . As a result, sediment load in the lower river will most likely [Dropdown 2] .

Revolt · Accepted Answer

increase|increase

Question 4

Classify each location based on whether the dominant process is erosion or deposition.

Revolt · Accepted Answer

mid-river,headwaters|delta

Question 5

Match each observed change with its most likely ecological cause.

Revolt · Accepted Answer

less filtration of sediments entering lakes|reduced habitat quality in wetlands|higher nutrient loads transported from rivers

Question 6

Choose the correct answer from each drop-down menu to complete the statement. If river nitrate levels continue to rise, the number of algal bloom days in lakes will likely [Dropdown 1] and fish populations in lakes will likely [Dropdown 2] .

Revolt · Accepted Answer

increase|decrease

Question 7

Which outcome is most likely if another drought occurs without restoration?

Revolt · Accepted Answer

decline in amphibian populations due to poor wetland function

Question 8

What trend across the systems best shows how restoration supports stability after drought?

Revolt · Accepted Answer

Floodplains and wetlands recover functions that reduce erosion and pollution.

Question 9

Assume that post-restoration conditions continue for several years. Which outcome is most likely in the watershed?

Revolt · Accepted Answer

improved crop yields on floodplain soils and cleaner lake water

Question 10

Why did lake conditions improve in the lake after restoration?

Revolt · Accepted Answer

Nutrient inputs declined, lowering algal blooms and improving oxygen.

Surface Freshwater — Quiz Answers

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