Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2912:30 AM EDT
-01:30 AM EDT
Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
Apr 3001:30 AM EDT
-02:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
May 0306:30 AM PDT
-08:30 AM PDT
Verbal trouble on GMAT? Fix it NOW! Join Sunita Singhvi for a focused webinar on actionable strategies to boost your Verbal score and take your performance to the next level.
15 Feb 2018, 19:40
Kudos
Bookmarks
Scientists studying climate change have found that global warming not only increases the temperature of the planet but also leads, on average, to an earlier arrival of the spring season and a later arrival of the autumn season. Though some argue that this effect on the seasons is advantageous because it increases the length of the summer growing season, leaders of the World Wildlife Fund fear that many animal species will not be able to adapt to the altered season lengths and will thus soon face extinction.
Which of the following, if true, provides the best evidence in support of the view held by the leaders of the World Wildlife Fund?
A. When spring arrives earlier than usual, most species of hibernating mammals are forced to emerge from hibernation earlier than usual and to find alternative food sources to supplement their regular diets.
B. As the planet's temperature rises, the average global sea surface temperature also rises, endangering several marine organisms that reside near the sea surface and that can only survive within very narrow temperature windows.
C. Many species of salmon rely on seasonal changes in temperature to signal the start of their annual migrations and will leave their freshwater birthplaces early if spring arrives early; as a result, the populations of several types of freshwater insects consumed by those species of salmon will grow exponentially, infesting thousands of acres of crops on which humans rely.
D. The young of many species of birds and rodents feed exclusively on caterpillars, whose metamorphosis into butterflies is triggered by seasonal changes in temperature.
E. As the length of the summer growing season increases, the amount of carbon emissions produced by humans gradually increases, exacerbating the increase in global temperatures that will likely endanger hundreds of animal species.
Which of the following, if true, provides the best evidence in support of the view held by the leaders of the World Wildlife Fund?
A. When spring arrives earlier than usual, most species of hibernating mammals are forced to emerge from hibernation earlier than usual and to find alternative food sources to supplement their regular diets.
B. As the planet's temperature rises, the average global sea surface temperature also rises, endangering several marine organisms that reside near the sea surface and that can only survive within very narrow temperature windows.
C. Many species of salmon rely on seasonal changes in temperature to signal the start of their annual migrations and will leave their freshwater birthplaces early if spring arrives early; as a result, the populations of several types of freshwater insects consumed by those species of salmon will grow exponentially, infesting thousands of acres of crops on which humans rely.
D. The young of many species of birds and rodents feed exclusively on caterpillars, whose metamorphosis into butterflies is triggered by seasonal changes in temperature.
E. As the length of the summer growing season increases, the amount of carbon emissions produced by humans gradually increases, exacerbating the increase in global temperatures that will likely endanger hundreds of animal species.
15 Feb 2018, 19:40
Kudos
Bookmarks
Official Solution:
Scientists studying climate change have found that global warming not only increases the temperature of the planet but also leads, on average, to an earlier arrival of the spring season and a later arrival of the autumn season. Though some argue that this effect on the seasons is advantageous because it increases the length of the summer growing season, leaders of the World Wildlife Fund fear that many animal species will not be able to adapt to the altered season lengths and will thus soon face extinction.
Which of the following, if true, provides the best evidence in support of the view held by the leaders of the World Wildlife Fund?
A. When spring arrives earlier than usual, most species of hibernating mammals are forced to emerge from hibernation earlier than usual and to find alternative food sources to supplement their regular diets.
B. As the planet's temperature rises, the average global sea surface temperature also rises, endangering several marine organisms that reside near the sea surface and that can only survive within very narrow temperature windows.
C. Many species of salmon rely on seasonal changes in temperature to signal the start of their annual migrations and will leave their freshwater birthplaces early if spring arrives early; as a result, the populations of several types of freshwater insects consumed by those species of salmon will grow exponentially, infesting thousands of acres of crops on which humans rely.
D. The young of many species of birds and rodents feed exclusively on caterpillars, whose metamorphosis into butterflies is triggered by seasonal changes in temperature.
E. As the length of the summer growing season increases, the amount of carbon emissions produced by humans gradually increases, exacerbating the increase in global temperatures that will likely endanger hundreds of animal species.
And we have some healthy debate going on here! Always a good thing
The conclusion, which is contained within the view held by the leaders of the World Wildlife Fund, is that many animal species will soon face extinction. So let's start by figuring out: why do the leaders of the WWF fear that this will happen
We are told that, based on scientific studies, global warming increases the temperature of the planet AND leads to an earlier arrival of the spring season and a later arrival of the autumn season. Is that change to the seasons necessarily a bad thing (or something WWF leaders should fear)? Some even argue that this change can be beneficial because "it increases the length of the summer growing season", so why are the WWF leaders fearful
WWF leaders fear that many animal species will not be able to adapt to the altered season lengths and that, as a result, those animal species will soon face extinction. This view would be supported by any evidence showing how altered season lengths could lead to an animal's extinction
Let's see if any of the answer choices provide such support
(A) This evidence demonstrates how altered season lengths can affect an animal, but it does not show that the change would affect the animal's ability to survive. Sure, the animals would be "forced" to find alternative food supplies, but there's no indication that they would fail to find those food sources. You'd have to make a huge assumption in order to conclude that this would contribute to extinctions. (A) can be eliminated
(B) This example shows how the increase in the temperature of the planet can endanger certain species, but leaders of the WWF are concerned about the altered season lengths, not about the increase in the temperature of the planet. This evidence suggests that global warming can be dangerous for certain species, but it does not support the reasoning of the WWF leaders. (B) can be eliminated.
(C) Here is an example of how the altered season lengths could have a negative impact on one species of animal: humans. However, it does not suggest that humans will be unable to adapt to the changes or unable to survive as a species because of the changes, so choice (C) can be eliminated
(D) As with choice (A), we have an example of how altered season lengths can affect an animal (the metamorphosis of caterpillars into butterflies is triggered by seasonal changes in temperature). But choice (D) also tells us how the effect on one animal will indirectly affect another animal: "the young of many species of birds and rodents feed exclusively on caterpillars". If caterpillars are the ONLY source of food for the young of many bird and rodent species and if caterpillars morph into butterflies earlier because of the early arrival of spring, then it's possible that all or most of the caterpillars will turn into butterflies before the young are hatched. This effect could severely diminish the survival rate of those young who have lost their only source of food
We certainly don't know for sure if the affected bird and rodents will be unable to adapt and survive, but choice (D) provides a solid example of how altered season lengths could lead to the extinction of certain species. Therefore, choice (D) definitely supports the view held by the WWF leaders
(E) This example shows a possible negative impact of the altered season lengths. However, choice (E) illustrates a GRADUAL change, suggesting that it will NOT cause any animals to face extinction anytime soon. Furthermore, this example does not show how animals will be unable to adapt to the altered season lengths and thus unable to survive. Rather, this scenario demonstrates how the altered season lengths will impact the temperature of the planet, which in turn will endanger many animal species. Although this evidence might contribute to the fears of the WWF leaders (because of the indirect effect on many animal species), it does not show us how an inability to adapt to the altered season lengths could lead to extinction. Choice (E) can be eliminated
Choice (D) provides the best evidence in support of the view held by the leaders of the World Wildlife Fund and thus is the best answer
Answer: D
Scientists studying climate change have found that global warming not only increases the temperature of the planet but also leads, on average, to an earlier arrival of the spring season and a later arrival of the autumn season. Though some argue that this effect on the seasons is advantageous because it increases the length of the summer growing season, leaders of the World Wildlife Fund fear that many animal species will not be able to adapt to the altered season lengths and will thus soon face extinction.
Which of the following, if true, provides the best evidence in support of the view held by the leaders of the World Wildlife Fund?
A. When spring arrives earlier than usual, most species of hibernating mammals are forced to emerge from hibernation earlier than usual and to find alternative food sources to supplement their regular diets.
B. As the planet's temperature rises, the average global sea surface temperature also rises, endangering several marine organisms that reside near the sea surface and that can only survive within very narrow temperature windows.
C. Many species of salmon rely on seasonal changes in temperature to signal the start of their annual migrations and will leave their freshwater birthplaces early if spring arrives early; as a result, the populations of several types of freshwater insects consumed by those species of salmon will grow exponentially, infesting thousands of acres of crops on which humans rely.
D. The young of many species of birds and rodents feed exclusively on caterpillars, whose metamorphosis into butterflies is triggered by seasonal changes in temperature.
E. As the length of the summer growing season increases, the amount of carbon emissions produced by humans gradually increases, exacerbating the increase in global temperatures that will likely endanger hundreds of animal species.
And we have some healthy debate going on here! Always a good thing
The conclusion, which is contained within the view held by the leaders of the World Wildlife Fund, is that many animal species will soon face extinction. So let's start by figuring out: why do the leaders of the WWF fear that this will happen
We are told that, based on scientific studies, global warming increases the temperature of the planet AND leads to an earlier arrival of the spring season and a later arrival of the autumn season. Is that change to the seasons necessarily a bad thing (or something WWF leaders should fear)? Some even argue that this change can be beneficial because "it increases the length of the summer growing season", so why are the WWF leaders fearful
WWF leaders fear that many animal species will not be able to adapt to the altered season lengths and that, as a result, those animal species will soon face extinction. This view would be supported by any evidence showing how altered season lengths could lead to an animal's extinction
Let's see if any of the answer choices provide such support
(A) This evidence demonstrates how altered season lengths can affect an animal, but it does not show that the change would affect the animal's ability to survive. Sure, the animals would be "forced" to find alternative food supplies, but there's no indication that they would fail to find those food sources. You'd have to make a huge assumption in order to conclude that this would contribute to extinctions. (A) can be eliminated
(B) This example shows how the increase in the temperature of the planet can endanger certain species, but leaders of the WWF are concerned about the altered season lengths, not about the increase in the temperature of the planet. This evidence suggests that global warming can be dangerous for certain species, but it does not support the reasoning of the WWF leaders. (B) can be eliminated.
(C) Here is an example of how the altered season lengths could have a negative impact on one species of animal: humans. However, it does not suggest that humans will be unable to adapt to the changes or unable to survive as a species because of the changes, so choice (C) can be eliminated
(D) As with choice (A), we have an example of how altered season lengths can affect an animal (the metamorphosis of caterpillars into butterflies is triggered by seasonal changes in temperature). But choice (D) also tells us how the effect on one animal will indirectly affect another animal: "the young of many species of birds and rodents feed exclusively on caterpillars". If caterpillars are the ONLY source of food for the young of many bird and rodent species and if caterpillars morph into butterflies earlier because of the early arrival of spring, then it's possible that all or most of the caterpillars will turn into butterflies before the young are hatched. This effect could severely diminish the survival rate of those young who have lost their only source of food
We certainly don't know for sure if the affected bird and rodents will be unable to adapt and survive, but choice (D) provides a solid example of how altered season lengths could lead to the extinction of certain species. Therefore, choice (D) definitely supports the view held by the WWF leaders
(E) This example shows a possible negative impact of the altered season lengths. However, choice (E) illustrates a GRADUAL change, suggesting that it will NOT cause any animals to face extinction anytime soon. Furthermore, this example does not show how animals will be unable to adapt to the altered season lengths and thus unable to survive. Rather, this scenario demonstrates how the altered season lengths will impact the temperature of the planet, which in turn will endanger many animal species. Although this evidence might contribute to the fears of the WWF leaders (because of the indirect effect on many animal species), it does not show us how an inability to adapt to the altered season lengths could lead to extinction. Choice (E) can be eliminated
Choice (D) provides the best evidence in support of the view held by the leaders of the World Wildlife Fund and thus is the best answer
Answer: D
07 May 2018, 13:43
Kudos
Bookmarks
Looking at answer choice D, If we don't know exactly when the young birds hatch (i.e. if they hatch all year versus a specific time frame), how can a change in when caterpillars turn into butterflies affect the young bird population and thus endanger the species?
