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samsung1234
Joined: 21 Jun 2020
Last visit: 08 Dec 2022
Posts: 453
Own Kudos:
Given Kudos: 283
Location: Canada
Schools: Fuqua '24 (II)
GRE 1: Q168 V160
27 Oct 2021, 00:32
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This is a rather straightforward passage + questions, 8:33 to complete reading and questions. I'm not particularly strong in RC, I feel as though this is a sub 600 question
04 Feb 2022, 02:08
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Hi Experts,
GMATNinja KarishmaB
5. The challenge posed to the Wynne-Edwards-theory by several studies is regarded by the author with
(A) complete indifference
(B) qualified acceptance
I was confused btw A and B and needs some clarity.
I agree that author has used "some justification" and this modifier hints us towards B. But if we look at the overall tone of the passage, the author simply presents 3 theories and some explanation. If we accept B, the author must have presented his view point about the challenge posed by several studies. The author says this study has provided some justification about the challenge. It doesn't cover author's inclination. That's why I think A is better than B.
Please help me to reject A.
For Q3, why D is incorrect?
3. Which of the following, if true, would best support the density-dependent theory of population control as it is described in the passage?
(D) After the number of beavers in Tennessee decreases, the number of predators of these beavers begins to increase.
Bcz if no. of beavers decrease, the food availability for predators of beavers will decrease. But we cant say the no. of predators/population of predators itself will begin increasing when no. of beavers decrease. There is no relation given.
(A) As the number of foxes in Minnesota decrease, the growth rate of this population of foxes begins of increase.
- We know from the passage that "the rate of growth of a population in a region decreases as the number of animals increases" So when no. of animals increases, the growth decrease but how to derive opposite is also true (As no. decreases, the population growth rate increase)
Case 1 - No. of animals - 100 | Population Rate - 10%
Case 2 - No. of animals - 200 | Population Rate - 5%
If Case 1 to 2 is given, can we always infer case 2 to 1? I have encountered this type of relation in other CR questions too. So wanted to improve my understanding of such relation.
Thanks in advance!
GMATNinja KarishmaB
5. The challenge posed to the Wynne-Edwards-theory by several studies is regarded by the author with
(A) complete indifference
(B) qualified acceptance
I was confused btw A and B and needs some clarity.
I agree that author has used "some justification" and this modifier hints us towards B. But if we look at the overall tone of the passage, the author simply presents 3 theories and some explanation. If we accept B, the author must have presented his view point about the challenge posed by several studies. The author says this study has provided some justification about the challenge. It doesn't cover author's inclination. That's why I think A is better than B.
Please help me to reject A.
For Q3, why D is incorrect?
3. Which of the following, if true, would best support the density-dependent theory of population control as it is described in the passage?
(D) After the number of beavers in Tennessee decreases, the number of predators of these beavers begins to increase.
Bcz if no. of beavers decrease, the food availability for predators of beavers will decrease. But we cant say the no. of predators/population of predators itself will begin increasing when no. of beavers decrease. There is no relation given.
(A) As the number of foxes in Minnesota decrease, the growth rate of this population of foxes begins of increase.
- We know from the passage that "the rate of growth of a population in a region decreases as the number of animals increases" So when no. of animals increases, the growth decrease but how to derive opposite is also true (As no. decreases, the population growth rate increase)
Case 1 - No. of animals - 100 | Population Rate - 10%
Case 2 - No. of animals - 200 | Population Rate - 5%
If Case 1 to 2 is given, can we always infer case 2 to 1? I have encountered this type of relation in other CR questions too. So wanted to improve my understanding of such relation.
Thanks in advance!
07 Feb 2022, 22:31
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Sneha2021
3. Which of the following, if true, would best support the density-dependent theory of population control as it is described in the passage?
(A) As the number of foxes in Minnesota decrease, the growth rate of this population of foxes begins of increase.
(B) As the number of woodpeckers in Vermont decreases, the growth rate of this population of woodpeckers also begins to decrease.
(C) As the number of prairie dogs in Oklahoma increases, the growth rate of this population of prairie dogs also begins to increase.
(D) After the number of beavers in Tennessee decreases, the number of predators of these beavers begins to increase.
(E) After the number of eagles in Montana decreases, the food supply of this population of eagles also begins to decrease.
A second theory argues that population growth is primarily density-dependent—that is, the rate of growth of a population in a region decreases as the number of animals increases.
Density dependent theory is that 'population growth is density dependent'. The passage further explains how it is dependent. Rate of growth is inversely related to number of animals. So if number of animals increases, rate of growth decreases. Then it stands to reason that if number of animals decreases, rate of growth would increase even if it is not explicitly mentioned. Still, I would be a tad wary so would look at all options properly. If all other options are anyway incorrect, then it is fine.
(A) As the number of foxes in Minnesota decrease, the growth rate of this population of foxes begins of increase.
Correct. If number of animals decreases, growth rate increases.
(B) As the number of woodpeckers in Vermont decreases, the growth rate of this population of woodpeckers also begins to decrease.
This says that if number of animals decreases, growth rate decreases. Incorrect.
(C) As the number of prairie dogs in Oklahoma increases, the growth rate of this population of prairie dogs also begins to increase.
This says that if number of animals increases, growth rate increases. Incorrect.
(D) After the number of beavers in Tennessee decreases, the number of predators of these beavers begins to increase.
This says that if number of animals decreases, number of predators increases. Incorrect.
(E) After the number of eagles in Montana decreases, the food supply of this population of eagles also begins to decrease.
This says that if number of animals decreases, the food supply decreases. Incorrect.
Answer (A)
