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Science bio mcq homework




Question;Question 1 of 20;5.0 Points;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;5.0 Points;According to the text, by 2050, it is believed that;of the earth's species will become extinct if rain forest;destruction continues.;A. 6%;B. 14%;C. 25%;D. 50%;Question 3 of 20;5.0 Points;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;5.0 Points;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%;Reset Selection;Mark for Review What's This?;Question 5 of 20;5.0 Points;The United States is responsible for __________ of the;world's total energy consumption.;A. 15%;B. 25%;C. 35%;D. 45%;Question 6 of 20;5.0 Points;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;5.0 Points;Indirectly, the "meat-eating quarter of humanity;consumes nearly __________ of the world's grain.;A. 15%;B. 20%;C. 40%;D. 50%;Question 8 of 20;5.0 Points;According to the National Academy of Sciences, the Earth's;surface temperature has risen about __________ in the past century.;A. 1%;B. 5%;C. 10%;D. 12%;Question 9 of 20;5.0 Points;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;5.0 Points;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.;Question 11 of 20;5.0 Points;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;5.0 Points;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;5.0 Points;The reauthorization of the Magnuson Act in 1996 focused on;all of the following EXCEPT;A. overfishing.;B. funding.;C. air quality.;D. habitat degradation.;Question 14 of 20;5.0 Points;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.;Reset Selection;`t;5.0 Points;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.;Question 16 of 20;5.0 Points;Which of the following is an ingredient of acid rain?;A. Lead;B. Nitrogen dioxide;C. VOCs;D. Ozone;Question 17 of 20;5.0 Points;The process of searching for new natural medicines is;called;A. drug testing.;B. bioprospecting.;C. FDA approval seeking.;D. curative compounding.;Question 18 of 20;5.0 Points;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;5.0 Points;In considering the origins of the top 150 drugs in the;United States, __________ origins account for the greates percentage of drugs.;A. synthetic;B. animal;C. plant;D. marine;Question 20 of 20;5.0 Points;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.


Paper#63021 | Written in 18-Jul-2015

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