What percentage increase in population did Hidalgo and Willacy counties experience from 1997 to 2007? What problems can a rapidly growing population pose to a watershed?

The answer is below

Explanation:

1. A) The percentage increase in population in Hildago between 1997 to 2007 is:

Given that Hildago population in 1997 = 511, 324

Hildago population in 2007 = 726,604

Hence, the percentage increase is 726,604 - 511,324 = 215280

Then 215280 ÷ 726604 = 0.2962 ≈ 29.62%

1. B) For Willacy

Willacy population in 1997 = 19,332

Hildago population in 2007 = 20,600

Hence, the percentage increase is 20,600 - 19,332 = 1268

Then 1268 ÷ 20600 = 0.0615 ≈ 6.15%

2.  The problem a rapidly growing population posed to a watershed are:

A.  impaired water bodies

B.  percentage of surface waters impaired increases

C.  source of pollution

D.  number of waste water facilities draining into the water bodies.

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