ALREADY GRADED A+ | VERIFIED ANSWERS
Bob Davison describes the Endangered Species Act (ESA) as an effective tool for conserving
biological diversity. What is his rationale for the value of focusing on individual species?
A) The public tends to value intact ecosystems over particular plant and animal species.
B) A focus on individual species is cheaper than protecting entire ecosystems.
C) Establishing public empathy for charismatic species provides an opportunity to educate
people about lesser-known species.
D)The public is not concerned about the economic costs of individual species recovery. -
(Correct Answer)-C) Establishing public empathy for charismatic species provides an
opportunity to educate people about lesser-known species.
Peyton Knight gives several reasons why the ESA should not be considered a success. Which of
the following reasons does he include in his essay?
A) Several ESA "success" stories are species that were already on the increase before their ESA
listing.
B) Species recovery cannot be described as a success because of the high costs for the federal
government.
C) The federal government has failed to enforce other environmental laws.
D) Species listed as endangered are more likely to go extinct than non-listed species. - (Correct
Answer)-A) Several ESA "success" stories are species that were already on the increase
before their ESA listing.
, 2
Identify each author's primary criticism of the ESA and determine which statement below
accurately describes one author's comments.
A) Knight: The problem is labeling species as endangered that are already in recovery.
B) Davison: The problem is the shift away from ecosystem protection to individual species.
C) Knight: Allowing private landowners to destroy habitat is the primary problem with the ESA.
D) Davison: The ESA itself is not the problem. Rather it is lack of enforcement of other local,
state, and federal laws aimed at ecological integrity. - (Correct Answer)-D) Davison: The ESA
itself is not the problem. Rather it is lack of enforcement of other local, state, and federal
laws aimed at ecological integrity.
Knight suggests that many private landowners deliberately destroy endangered species habitat
because they are not reimbursed by the federal government. Compare this with Davison's
observations about the public. What action do you think Davidson would recommend based on
his essay?
A) Widespread private landowner protests against the federal government
B) Federal compensation for private landowners
C) Greater educational efforts to help citizens understand the value of endangered species and
ecosystems
D) A thorough revision of the ESA - (Correct Answer)-C) Greater educational efforts to help
citizens understand the value of endangered species and ecosystems
, 3
If the ESA were revised by Congress, which combination of provisions would both authors
consider?
A) Strengthened enforcement of all federal ecosystem laws and money earmarked for private
landowner compensation
B) Offering land swaps for endangered species habitat while eliminating other federal laws that
duplicate the intent of the ESA
C) Limiting the ESA to only include species found on public land
D) Tighter restrictions on which species can be listed as endangered or threatened - (Correct
Answer)-A) Strengthened enforcement of all federal ecosystem laws and money earmarked
for private landowner compensation
Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally.
When people buy 10 of them and don't use them all, they often dump the remainder into the lake
or river. This is an example of ________.
A) an introduced species
B) habitat destruction
C) overharvesting of species from the wild
D) inbreeding
E) extirpation - (Correct Answer)-A) an introduced species
The greatest cause of the worldwide loss of species is ________.
A) anthropogenic activities
, 4
B) habitat destruction
C) air pollution
D) decreased soil nutrients
E) water pollution - (Correct Answer)-B) habitat destruction
The sixth mass extinction event __________.
A) has not occurred
B) happened billions of years ago as a result of the sun being further away from Earth
C) happened millions of years ago and was caused by an asteroid
D) is ongoing and has been caused by human disturbance - (Correct Answer)-D) is ongoing
and has been caused by human disturbance
Maria loves to be outdoors. She hikes every day in the woods, near the home that she shares with
five pets. Maria's lifestyle provides evidence of __________.
A) biophobia
B) resilience
C) nature-deficit disorder
D) biophilia - (Correct Answer)-D) biophilia
Which of the following statements about cloning organisms is true?
A) Cloning of mammals is not possible.
B) Cloning of mammals tends to produce viable organisms that survive to reproductive age.
C) Cloning mammals is a more viable strategy than habitat protection for increasing the
biodiversity of species on the earth.