APES Quiz

Corn can be grown at a rate of 1,000 kcal per hectare, and it takes 20 times more land to produce beef than it does to produce corn. Which of the following equations would correctly calculate the amount of land needed to produce 10,000 kcal of beef?

000 kcal corn×20 kcal corn1 kcal beef×10,000 kcal beef

The land on a 100-acre farm is equally suited for grazing cattle and growing corn. Of the following ways of distributing land use, which would produce the greatest number of calories of human consumption?

Acres for Grazing Cattle 0 Acres for Growing Corn 100

Compared with people in developing countries, people in industrialized countries are more likely to eat

Beef

Which of the following is a greenhouse gas that is produced by domestic livestock?

CH4

Which of the following best illustrates the concept of the tragedy of the commons

Depletion of an aquifer by regional farmers

Which of the following is the best illustration of the tragedy of the commons?

Depletion of fishing stocks in the North Atlantic

At the current rate of growth, Earth's human population will double in about 50 years. Which of the following is the LEAST viable strategy for ensuring adequate nutrition for a population of this size?

Doubling the area of arable land on a global basis

The development of dangerous strains of disease organisms represents a significant consequence of which of the following agricultural practices?

Incorporating antibiotics into the feeding regimens of densely concentrated livestock

As part of a school project, a group of high school students will attempt to determine whether increasing the species diversity of the edible plants in pastures used for grazing livestock will provide an economic benefit to ranchers. Which of the following hypotheses, if supported by experimental results, best demonstrates an economic benefit to the ranchers?

Pastures with the highest diversity of plant species will have the highest net primary productivity

Which of the following statements is consistent with the graphs above?

People in North America consume more meat per capita than people in other regions of the world do.

Which of the following is most likely to increase both the nutrient levels and the bacterial content of lake water?

Runoff from a nearby hog farm

The presence of fecal coliform bacteria in a sample of river water suggests which of the following

The water is contaminated with animal waste.

Which of the following is true of farm-raised salmon?

They are often infected with parasites and sea lice.

Which of the following best explains why the maximum sustainable yield for ocean fisheries has been exceeded?

Too many fish of reproductive age are harvested.

Which of the following is the best example of the tragedy of the commons?

Water pollution from oil rigs concentrated in the Gulf of Mexico

Overgrazing of grasslands can lead to reduced range quality. Two of the major effects of overgrazing are

erosion and desertification

Salmon farming threatens the health of wild salmon stocks primarily because

farmed salmon can spread parasites and disease to wild salmon

The presence of high levels of fecal coliform bacteria in a water source indicates that the water

has been contaminated by untreated human or animal waste

Vegetarianism is often cited as a partial solution to the growing problem of deforestation and other types of habitat destruction as the human population continues to grow. The reason for this is

more people can be fed using less agricultural land because vegetarians eat at a lower trophic level

The major cause for the decline in the worldwide catch of fish since 1990 is

overfishing

Overgrazing of public land by privately owned livestock is an example of the

tragedy of the commons