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Setting conservation objectives often mixes scientific knowledge with political feasibility in such a way that one cannot tell where the science stops and the political pragmatism takes over. For example, Tear found that for endangered species with recovery plans, over a quarter of the plans set quantitative recovery objectives at or below the species’ existing population size or number of populations. Most likely these objectives were so low because they were politically palatable. Another possible explanation for such modest recovery objectives is what is known as the shifting-baseline syndrome. In this scenario, successive generations of wildlife managers use as their baseline the conditions they experienced at the start of their careers, resulting in lower expectations with each new generation.
According to the passage, the “shifting-baseline syndrome” is a result of which of the following?
当前版本由更新于2020-04-22 17:11:41 感谢由对此题目的解答所做出的贡献。
根据关键词shifting-baseline syndrome定位到最后一句resulting in前面“In this scenario, successive generations of wildlife managers use as their baseline the conditions they experienced at the start of their careers”这句话。C是这句话的同义改写。
D错，逻辑错误。原文说的是wildlife managers use as their baseline the conditions they experienced at the start of their careers，D选项说的是recent conditions
[数学 ]经典真题240 -8998
For which of the following values of x is the units digit of the product (2)( 3x ) equal to 4?
[数学 ]经典真题240 -8997
If 2, 4, 6, and 9 are the digits of two 2-digit integers, what is the least possible positive difference between the integers?
[数学 ]经典真题240 -8996
A family paid 12 percent of its annual after-tax income on food last year. This amount was equal to 10 percent of its annual before-tax income last year. Which of the following is closest to the percent of the family’s annual before-tax income that was paid for taxes last year?
[数学 ]经典真题240 -8995
In the xy-plane, the points P,Q and S have coordinates (14,10), (1,0), and (6,0), respectively. What is the area of triangular region PQS?
[数学 ]经典真题240 -8994
Which of the following pairs of integers have reciprocals whose sum is either less than 1/3 or greater than 1/2? Indicate all such pairs.
[数学 ]经典真题240 -8993
By approximately how many square miles did the area of the United States increase from 1800 to 1900?
[数学 ]经典真题240 -8992
In a distribution of the values of the variable x, the 50th percentile is 48.5, and the 60th percentile is 56.5. Quantity A: The 40th percentile of the distribution of the values of x Quantity B: 40.5
[数学 ]经典真题240 -8991
In the xy-plane, C and D are circles centered at the origin with radii √17 and √5 , respectively. Quantity A: The number of points (a,b) on circle C where both a and b are integers Quantity B: The number of points (a,b) on circle D where both a and b are integers
[数学 ]经典真题240 -8990
If 0 < x < y < 10, then A(x,y) represents the area of the region bounded by the number line, the semi-circle, and the vertical segments at x and y, as indicated by the shaded region. 0 < a < b < c < 10 Quantity A: A(a,b) + A(b,c) Quantity B: A(a,c)
[数学 ]经典真题240 -8989
xy > 0. Quantity A: x 4 y 3 Quantity B: 0
[数学 ]经典真题240 -8988
Point O is the center of a circle with circumference 12. Point P is another point inside the circle. Quantity A: The greatest distance from P to a point on the circle plus the least distance from P to a point on the circle Quantity B: 4
[数学 ]经典真题240 -8987
In a certain club, the average (arithmetic mean) of the 35 males is 24.2 years and the average age of the 25 females is 27.6 years. Quantity A: The average age of all of the people in the club Quantity B: 25.9
[数学 ]经典真题240 -8986
Quantity A: The greatest possible value of 3/(x − y), where 6 ≤ x ≤ 8 and 0 ≤ y ≤ 5. Quantity B: 3.
[数学 ]经典真题240 -8985
Greg’s weekly salary is 187, which is 15 percent less than Karla’s weekly salary. If Karla’s weekly salary increases by 10 percent, by what percent must Greg’s weekly salary increase in order to equal Karla’s new weekly salary? Give your answer to the nearest tenth of a percent.
[数学 ]经典真题240 -8984
How many integer values of n satisfy the inequality |3 − n| ≤ 4?
[数学 ]经典真题240 -8983
If an integer greater than 100 and less than 1,000 is to be selected at random, what is the probability that the integer selected will be a multiple of 7?
[数学 ]经典真题240 -8982
Mike, Scott, Jim, Kate, and Pete each have a different number of assignments this month. Pete has fewer assignments than Kate, Kate has more assignments than Mike, Mike has more assignments than Jim, and Jim has more assignments than Scott. Which of the following could be the person who has the median number of assignments this month for the five people listed? Indicate all such people.
[数学 ]经典真题240 -8981
Which of the following is closest to the number of males who were not enrolled in college in 1993?
[数学 ]经典真题240 -8980
By approximately what percent did the total number of the students enrolled in college increase from 1973 to 1993?
[数学 ]经典真题240 -8979
Of the four college enrollment categories shown, how many categories accounted for more than 3/8 of the total college enrollment in 1973?