ENVS PRACTICE 2

chapter 15 A radioisotope with a half-life of 10 years decays to a stable isotope. In 400 years, the radioactivity emitted by the radioisotope will decline by a factor of approximately

1,000,000,000,000

chapter 12 Approximately what percentage of the world's croplands are used to feed domestic animals?

33%

Which one of the following statements is true about a Hadley cell?

Air rises at the equator and sinks at 30 degrees latitude

chapter 16 The forms of renewable energy that currently account for the greatest amount of renewable energy production in the United States are

Biomass and hydropower

chapter 15 Which of the following countries generates the greatest percentage of its electricity from nuclear power plants?

France

chapter 12 The four crops that account for the most production of genetically modified (GM) crops globally are

Soybeans, corn, canola, and cotton

chapter 13 The principal concern with the use of neonicotinoid insecticides is their adverse effects on

bees

Golden eagle populations in England recovered after use of was terminated in sheep dips.

dieldrin

chapter 13 The Delaney clause concerns which one of the following?

Carcinogenic food additives

chapter 16 The country with the greatest number of solar hot water heaters is

China

In which two of the following countries are the greatest numbers of people living on less than $10 per day?

China and India

The process by which water vapor passes through stomata from plants to the atmosphere is called

evapotranspiration

chapter 16 Electricity produced by which one of the following IS an example of green power?

• a. solar • b. wind • d. geothermal All of the above

chapter 8 : Which one of the following statements is true?

Since 1960, average income per capita has increased. O c. Since 1960, life expectancy has increased. • d. Since 1960, infant mortality has decreased. All of the above is true

chapter 8 : Which one of the following statements is not true?

Since 1960, the percentage of people living in high-income countries has increased.

chapter 8: In hypothetical country A, everyone dies when they reach the age of 60. In hypothetical country B, which has a better health care system, everyone dies when they reach the age of 80. If the total population of both countries is stable, what percentage of the total population would you expect to be in the age group 32-43 years inclusive?

20% in country A and 15% in country B

chapter 14 Carbon dioxide emissions by which one of the following countries have decreased the most since 2005?

United States

chapter 12 Golden rice is a cultivar of rice that was genetically modified to address problems associated with diets that are deficient in vitamin A. Golden rice is enriched with which one of the following?

beta carotene

The nutrients that support plant growth in natural terrestrial ecosystems are supplied mainly by

breakdown of detritus

chapter 14 Most electric power plants built in the United States since 2000 use which one of the following sources of energy?

natural gas

chapter 16 Electricity produced by which one of the following is not an example of green power?

natural gas

If Earth rotated in the opposite direction, the Trade Winds in the northern hemisphere would blow from the

northwest