Last visit was: 21 May 2024, 19:06 It is currently 21 May 2024, 19:06
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
SORT BY:
Date
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 93373
Own Kudos [?]: 625654 [1]
Given Kudos: 81918
Send PM
Verbal Chat Moderator
Joined: 20 Mar 2018
Posts: 2002
Own Kudos [?]: 1617 [0]
Given Kudos: 1680
Send PM
Senior Manager
Senior Manager
Joined: 07 Apr 2020
Posts: 358
Own Kudos [?]: 432 [2]
Given Kudos: 72
Location: India
Concentration: Strategy, Technology
WE:Engineering (Computer Software)
Send PM
Math Expert
Joined: 02 Sep 2009
Posts: 93373
Own Kudos [?]: 625654 [0]
Given Kudos: 81918
Send PM
Re: Operations at the Green Hills Gold Mine are continuously releasing mer [#permalink]
Expert Reply
Bunuel wrote:
Operations at the Green Hills Gold Mine are continuously releasing mercury into the headwaters of the Apache River, and most fish in the Apache River now have mercury levels at or above the legal limit for human consumption. With the price of gold rising, forcing more and more mining at Green Hills, there seems no hope for food fishing along the Apache River.

Which of the following plans, if feasible, would allow the state to assist the food fishing industries along the Apache?


(A) State workers will test the algae and underwater plants for mercury, removing those above a certain mercury threshold. These algae and plants are the principal food source of the food fish.

(B) The state bank will start to buy up large amounts of gold, preferentially buying directly from the Green Hills mines.

(C) Every six months, the state will send testers to twelve locations along the upper and lower Apache River, to test the mercury content in the water and in fish.

(D) The state will mount a public awareness campaign, educating private citizen and restaurateurs about the dangers of high levels of mercury in food fish.

(E) Immediately downstream from Green Hills, the state will install a sophisticated ionic filtration plant, which will substantially reduce the level of heavy metals (including mercury) in the water.


Official Explanation



We have a problem. Gold mining releases mercury, which contaminates the fish, enough that they are dangerous for humans to eat. Consequently, the food fishing industry is dying, and we want to implement a plan that will address this problem and save this dying industry.

(E) is the credited answer. If we can lower the mercury levels just downstream from the Green Hills mines, which will solve the problem at its root cause.

(A) Do the fish get the mercury from eating the alga? We don't know. Suppose they do: even then, this won't help ---- it certainly will not benefit the fish if we wind up removed their primarily source of food. Instead of living fish full of mercury, we would have fish that starved to death. Hardly an improvement!

(B) buying gold will only increase the pace of mining, which will increase the levels of mercury released into the river, which will exacerbate the problem, rather than solving it.

Both (C) & (D) make the same fallacy: knowledge, in and of itself, is not a solution. Simply knowing how much more mercury there is, or having citizens knowing the dangers of ingesting mercury, will not, by itself, make the mercury level drop or save the fishing industry in any way.
User avatar
Non-Human User
Joined: 01 Oct 2013
Posts: 17351
Own Kudos [?]: 851 [0]
Given Kudos: 0
Send PM
Re: Operations at the Green Hills Gold Mine are continuously releasing mer [#permalink]
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
GMAT Club Bot
Re: Operations at the Green Hills Gold Mine are continuously releasing mer [#permalink]
Moderators:
GMAT Club Verbal Expert
6936 posts
GMAT Club Verbal Expert
238 posts
CR Forum Moderator
832 posts