Homework Questions? Ask a Tutor for Answers ASAP
hello, yes it is timed..you have about 3 hours.
Yes, that's fine. I really need to do well on this exam; looking forward to your assistance.
Thank you in advance.
Hi again! I know that I thought I would have it completed by now without difficulty, but I'm finding that a lot more questions are textbook-specific than I had expected so it's been tough to find. For example, question 4 is just something that I can't find with certainty.
I'm currently in the process of double-checking the second half of the exam, but here are the answers to the first half. Anytime I have had difficulty confirming the answer, I've marked that down for you as well.
Question 1 of 20
The study of ecology focuses specifically on:
A. the world that is all around us.
B. the world of living things in our planet.
***C. the mutual relationship between organisms and the natural world.
D. anything having to do with life.
Question 2 of 20
According to the text, by 2050, it is believed that __________ of the earth's species will become extinct if rain forest destruction continues.
**this is pretty explicitly from your textbook because estimates vary so much, but it’s generally between 15-35% and the only choice in that range is C.
Question 3 of 20
Wetlands are important for all of the following reasons EXCEPT:
A. they provide local habitats for many species of animals and plants.
B. one-third of endangered or threatened species in the U.S. live in or are dependent on them.
***C. they harbor the majority of the world's flowering species.
D. they provide purification of local water supplies.
Question 4 of 20
The percentage of China's rivers that were severely polluted in 2000 was __________; in 2002 it was __________.
A. 12%; 20%
B. 22%; 51%
C. 32%; 65%
D. 42%; 71%
**I’m sorry, but I’ve been unable to find this answer online
Question 5 of 20
The United States is responsible for __________ of the world's total energy consumption.
Question 6 of 20
According to the article "The Grim Payback of Greed" our level of consumerism:
A. is essentially a creation of the 20th century.
B. has declined in the West but is growing rapidly in developing countries.
C. is highly correlated with reported levels of happiness.
D. is tied to our vast wealth, and to forces in the modern world that encourage people to act on their consumption desires.
Question 7 of 20
Indirectly, the "meat-eating quarter of humanity" consumes nearly __________ of the world's grain.
Question 8 of 20
According to the National Academy of Sciences, the Earth's surface temperature has risen about __________ in the past century.
Question 9 of 20
According to the textbook, an individual's most important decision that will effect the climate is:
A. the choice to unplug an extra freezer that is rarely used.
B. looking for the Energy Star on new appliances.
***C. selecting a fuel efficient automobile.
D. planting a tree.
Question 10 of 20
Which of the following was NOT a founding principle of the Kyoto Protocol?
***A. Scientific uncertainty must not be used to avoid precautionary action.
B. Nations must have common but differentiated responsibilities.
C. All nations must be included in the contract for it to work.
D. Industrial nations must take the lead in addressing the problem.
I'll have the other half to you shortly!
ok, many thanks.
Whoops, #6 hadn't been marked:
***D. is tied to our vast wealth, and to forces in the modern world that encourage people to act on their consumption desires.
OK, here are all the answers to the second half of the questions:
Question 11 of 20
The article "Young at Risk" proposes that the young of humans and animals are more vulnerable to chemical pollutant exposure due to all of the following reasons EXCEPT that:
***A. their brains are less sensitive than those of mature humans and animals.
B. the young eat and breathe more for their body weights than adults, so they get bigger proportional doses of external pollutants.
C. accumulated dioxin slows action to the immune system.
D. they will be getting about 50 times the exposure of an adult during critical developmental stages.
Question 12 of 20
The central problem in the international fishing industry is:
A. "poaching" by foreign vessels in the territorial waters of small nations.
B. laws restricting fishing in waters with the most abundant fish populations.
***C. the decline in fish populations due to over-fishing, pollution, and habitat destruction.
D. a lack of enforcement of the Magnuson Fishery Conservation and Management Act.
Question 13 of 20
The reauthorization of the Magnuson Act in 1996 focused on all of the following EXCEPT:
***C. air quality.
D. habitat degradation.
Question 14 of 20
According to the text, problems associated with the Endangered Species Act include all of the following EXCEPT:
A. its use as a "last-chance" approach to saving endangered species.
B. the creation of conflict between individual property owners and government regulations concerning species.
***C. a lack of public support for the Act.
D. ill-defined categories concerning the level of threat posed by human activities to individual species.
Question 15 of 20
Aside from lead, the two air pollutants most hazardous to human health are:
A. sulfur dioxide and carbon monoxide.
B. ozone and sulfur dioxide.
***C. ozone and fine airborne particulates.
D. nitrous oxides and carbon monoxide.
***Note: most website refuse to rank them as “most”, but this is from California’s EPA
Question 16 of 20
Which of the following is an ingredient of acid rain?
B. Nitrogen dioxide
Question 17 of 20
The process of searching for new natural medicines is called:
A. drug testing.
C. FDA approval seeking.
D. curative compounding.
Question 18 of 20
The economic value of the rain forest is based upon all of the following EXCEPT:
A. plants that potentially contain the basis for new medicines.
B. its value as a source of raw materials.
C. its value as a food source.
***D. its value as a fossil fuel source.
Question 19 of 20
In considering the origins of the top 150 drugs in the United States, __________ origins account for the greatest percentage of drugs.
**This is going to depend on how you define “synthetic” – if they are meaning completely derived in a lab, then it isn’t the answer, but most drugs today are at least semi-synthetic.
Question 20 of 20
The central problems mentioned in the case study concerning the Love Canal include all of the following EXCEPT that:
A. developers and the school board knew about the chemical dump, but proceeded anyway.
***B. individual citizens are powerless to make a difference in situations concerning waste dumping.
C. there are chemical dumps around the U.S. and the world which are annually increasing. Improved safe dumping and developing/ building standards need to be carefully created and monitored for safety of citizenry.
D. there are many heavily concentrated chemical dumps close to the Niagara River and such leaching and damage to the environment similar to Love Canal could easily again happen.
Please let me know if you have any more questions about this for me, or if I need to clarify anything!
ok, i will submit shortly. Thanks much.
OK, let me know if there is anything more that I can help you with!
we got 75%